[gtk+] Adwaita: try being smarter wrt extending buttons.

From: Lapo Calamandrei <lapo src gnome org>
To: commits-list gnome org
Cc:
Subject: [gtk+] Adwaita: try being smarter wrt extending buttons.
Date: Sun, 14 Feb 2016 01:36:41 +0000 (UTC)

commit 7f2d4400ba429a1f660bbece8bad3a8548f707f0
Author: Lapo Calamandrei <calamandrei gmail com>
Date:   Sun Feb 14 02:35:28 2016 +0100

    Adwaita: try being smarter wrt extending buttons.

 gtk/theme/Adwaita/_common.scss           |  119 ++--
 gtk/theme/Adwaita/gtk-contained-dark.css | 1375 +++++++++++-------------------
 gtk/theme/Adwaita/gtk-contained.css      | 1373 +++++++++++-------------------
 3 files changed, 1097 insertions(+), 1770 deletions(-)
---
diff --git a/gtk/theme/Adwaita/_common.scss b/gtk/theme/Adwaita/_common.scss
index 0c1569b..d5cb327 100644
--- a/gtk/theme/Adwaita/_common.scss
+++ b/gtk/theme/Adwaita/_common.scss
@@ -393,66 +393,81 @@ $_dot_color: if($variant=='light', $selected_bg_color,
   }
 }
 
-%button,
 button {
+  @at-root %button_basic, &{
+    $_button_transition: all 200ms $ease-out-quad;
 
-  $_button_transition: all 200ms $ease-out-quad;
+    min-height: 24px;
+    min-width: 16px;
+    padding: 4px 8px;
+    border: 1px solid;
+    border-radius: 3px;
+    transition: $_button_transition;
+    @include button(normal);
+    &.flat {
+      @include button(undecorated);
+      // to avoid adiacent buttons borders clashing when transitioning, the transition on the normal state 
is set
+      // to none, while it's added back in the hover state, so the button decoration will fade in on hover, 
but
+      // it won't fade out when the pointer leave the button allocation area. To make the transition more 
evident
+      // in this case the duration is increased.
+      transition: none;
 
-  min-height: 24px;
-  min-width: 16px;
-  padding: 4px 8px;
-  border: 1px solid;
-  border-radius: 3px;
-  transition: $_button_transition;
-  @include button(normal);
-  &.flat {
-    @include button(undecorated);
-    // to avoid adiacent buttons borders clashing when transitioning, the transition on the normal state is 
set
-    // to none, while it's added back in the hover state, so the button decoration will fade in on hover, but
-    // it won't fade out when the pointer leave the button allocation area. To make the transition more 
evident
-    // in this case the duration is increased.
-    transition: none;
+      &:hover {
+        transition: $_button_transition;
+        transition-duration: 500ms;
+
+        &:active { transition: $_button_transition; }
+      }
+    }
 
     &:hover {
-      transition: $_button_transition;
-      transition-duration: 500ms;
+      @include button(hover);
+      -gtk-icon-effect: highlight;
+    }
 
-      &:active { transition: $_button_transition; }
+    &:active, &:checked {
+      @include button(active);
+      transition-duration: 50ms;
     }
-  }
 
-  &:hover {
-    @include button(hover);
-    -gtk-icon-effect: highlight;
-  }
+    &:backdrop, &.flat:backdrop {
+      @include button(backdrop);
+      -gtk-icon-effect: none;
 
-  &:active, &:checked {
-    @include button(active);
-    transition-duration: 50ms;
-  }
+      &:active, &:checked { @include button(backdrop-active); }
 
-  &:backdrop, &.flat:backdrop {
-    @include button(backdrop);
-    -gtk-icon-effect: none;
+      &:disabled { @include button(backdrop-insensitive); }
 
-    &:active, &:checked { @include button(backdrop-active); }
+      &:disabled:active,
+      &:disabled:checked { @include button(backdrop-insensitive-active); }
+    }
 
-    &:disabled { @include button(backdrop-insensitive); }
+    &.flat:backdrop,
+    &.flat:disabled,
+    &.flat:backdrop:disabled { @include button(undecorated); }
 
-    &:disabled:active,
-    &:disabled:checked { @include button(backdrop-insensitive-active); }
-  }
+    &:disabled {
+      @include button(insensitive);
 
-  &.flat:backdrop,
-  &.flat:disabled,
-  &.flat:backdrop:disabled { @include button(undecorated); }
+      &:active,
+      &:checked { @include button(insensitive-active); }
+    }
 
-  &:disabled {
-    @include button(insensitive);
+    &.text-button {
+      padding-left: 16px;
+      padding-right: 16px;
+    }
 
-    &:active,
-    &:checked { @include button(insensitive-active); }
+    &.text-button.image-button {
+      // those buttons needs uneven horizontal padding, we want the icon side
+      // to have the image-button padding, while the text side the text-button
+      // one, so we're adding the missing padding to the label depending on
+      // its position inside the button
+      label:first-child { padding-left: 8px; }
+      label:last-child { padding-right: 8px; }
+    }
   }
+
   // big standalone buttons like in Documents pager
   &.osd {
     &.image-button {
@@ -592,20 +607,6 @@ button {
     }
   }
 
-  &.text-button {
-    padding-left: 16px;
-    padding-right: 16px;
-  }
-
-  &.text-button.image-button {
-    // those buttons needs uneven horizontal padding, we want the icon side
-    // to have the image-button padding, while the text side the text-button
-    // one, so we're adding the missing padding to the label depending on
-    // its position inside the button
-    label:first-child { padding-left: 8px; }
-    label:last-child { padding-right: 8px; }
-  }
-
   .stack-switcher > & {
     // to position the needs attention dot, padding is added to the button
     // child, a label needs just lateral padding while an icon needs vertical
@@ -1833,7 +1834,7 @@ notebook {
     }
 
     > tabs > arrow {
-      @extend %button;
+      @extend %button_basic;
       @extend button.flat;
 
       min-height: 16px;
@@ -3659,7 +3660,7 @@ decoration {
 // Window Close button
 headerbar button.titlebutton,
 .titlebar button.titlebutton {
-  @extend button;
+  @extend %button_basic;
   @extend button.flat;
   @include _button_text_shadow;
 
diff --git a/gtk/theme/Adwaita/gtk-contained-dark.css b/gtk/theme/Adwaita/gtk-contained-dark.css
index 5281c3b..c93f36a 100644
--- a/gtk/theme/Adwaita/gtk-contained-dark.css
+++ b/gtk/theme/Adwaita/gtk-contained-dark.css
@@ -346,10 +346,8 @@ entry, spinbutton:not(.vertical) {
     background-image: -gtk-gradient(radial, center center, 0, center center, 0.01, to(#3583d5), 
to(transparent)); }
   to {
     background-image: -gtk-gradient(radial, center center, 0, center center, 0.5, to(#215d9c), 
to(transparent)); } }
-notebook > header > tabs > arrow,
-button,
-headerbar button.titlebutton,
-.titlebar button.titlebutton {
+notebook > header > tabs > arrow, headerbar button.titlebutton,
+.titlebar button.titlebutton, button {
   min-height: 24px;
   min-width: 16px;
   padding: 4px 8px;
@@ -363,11 +361,9 @@ headerbar button.titlebutton,
   text-shadow: 0 -1px rgba(0, 0, 0, 0.81176);
   -gtk-icon-shadow: 0 -1px rgba(0, 0, 0, 0.81176);
   box-shadow: inset 0 1px rgba(255, 255, 255, 0.05), 0 1px rgba(238, 238, 236, 0); }
-  notebook > header > tabs > arrow.flat,
-  button.flat,
-  notebook > header > tabs > arrow,
-  button.sidebar-button,
-  headerbar button.titlebutton,
+  notebook > header > tabs > arrow.flat, headerbar notebook > header > tabs > arrow.titlebutton, headerbar 
button.titlebutton,
+  .titlebar notebook > header > tabs > arrow.titlebutton,
+  .titlebar button.titlebutton, button.flat, notebook > header > tabs > arrow, button.sidebar-button, 
headerbar button.titlebutton,
   .titlebar button.titlebutton {
     border-color: transparent;
     background-color: transparent;
@@ -376,25 +372,19 @@ headerbar button.titlebutton,
     text-shadow: none;
     -gtk-icon-shadow: none;
     transition: none; }
-    notebook > header > tabs > arrow.flat:hover,
-    button.flat:hover,
-    notebook > header > tabs > arrow:hover,
-    button.sidebar-button:hover,
-    headerbar button.titlebutton:hover,
+    notebook > header > tabs > arrow.flat:hover, headerbar notebook > header > tabs > 
arrow.titlebutton:hover, headerbar button.titlebutton:hover,
+    .titlebar notebook > header > tabs > arrow.titlebutton:hover,
+    .titlebar button.titlebutton:hover, button.flat:hover, notebook > header > tabs > arrow:hover, 
button.sidebar-button:hover, headerbar button.titlebutton:hover,
     .titlebar button.titlebutton:hover {
       transition: all 200ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
       transition-duration: 500ms; }
-      notebook > header > tabs > arrow.flat:hover:active,
-      button.flat:hover:active,
-      notebook > header > tabs > arrow:hover:active,
-      button.sidebar-button:hover:active,
-      headerbar button.titlebutton:hover:active,
+      notebook > header > tabs > arrow.flat:hover:active, headerbar notebook > header > tabs > 
arrow.titlebutton:hover:active, headerbar button.titlebutton:hover:active,
+      .titlebar notebook > header > tabs > arrow.titlebutton:hover:active,
+      .titlebar button.titlebutton:hover:active, button.flat:hover:active, notebook > header > tabs > 
arrow:hover:active, button.sidebar-button:hover:active, headerbar button.titlebutton:hover:active,
       .titlebar button.titlebutton:hover:active {
         transition: all 200ms cubic-bezier(0.25, 0.46, 0.45, 0.94); }
-  notebook > header > tabs > arrow:hover,
-  button:hover,
-  headerbar button.titlebutton:hover,
-  .titlebar button.titlebutton:hover {
+  notebook > header > tabs > arrow:hover, headerbar button.titlebutton:hover,
+  .titlebar button.titlebutton:hover, button:hover {
     color: #eeeeec;
     outline-color: rgba(238, 238, 236, 0.3);
     border-color: #1c1f1f;
@@ -409,13 +399,9 @@ headerbar button.titlebutton,
     -gtk-icon-shadow: 0 -1px rgba(0, 0, 0, 0.76376);
     box-shadow: inset 0 1px rgba(255, 255, 255, 0.05), 0 1px rgba(238, 238, 236, 0);
     -gtk-icon-effect: highlight; }
-  notebook > header > tabs > arrow:active, notebook > header > tabs > arrow:checked,
-  button:active,
-  headerbar button.titlebutton:active,
-  .titlebar button.titlebutton:active,
-  button:checked,
-  headerbar button.titlebutton:checked,
-  .titlebar button.titlebutton:checked {
+  notebook > header > tabs > arrow:active, headerbar button.titlebutton:active,
+  .titlebar button.titlebutton:active, notebook > header > tabs > arrow:checked, headerbar 
button.titlebutton:checked,
+  .titlebar button.titlebutton:checked, button:active, button:checked {
     color: #eeeeec;
     outline-color: rgba(238, 238, 236, 0.3);
     border-color: #1c1f1f;
@@ -424,14 +410,10 @@ headerbar button.titlebutton,
     -gtk-icon-shadow: 0 -1px rgba(0, 0, 0, 0.89176);
     box-shadow: inset 0 2px 1px -2px rgba(0, 0, 0, 0.6), 0 1px rgba(238, 238, 236, 0);
     transition-duration: 50ms; }
-  notebook > header > tabs > arrow:backdrop, notebook > header > tabs > arrow.flat:backdrop,
-  button:backdrop,
-  headerbar button.titlebutton:backdrop,
-  .titlebar button.titlebutton:backdrop,
-  button.flat:backdrop,
-  notebook > header > tabs > arrow:backdrop,
-  button.sidebar-button:backdrop,
-  headerbar button.titlebutton:backdrop,
+  notebook > header > tabs > arrow:backdrop, headerbar button.titlebutton:backdrop,
+  .titlebar button.titlebutton:backdrop, notebook > header > tabs > arrow.flat:backdrop, headerbar notebook

header > tabs > arrow.titlebutton:backdrop, headerbar button.titlebutton:backdrop,

+  .titlebar notebook > header > tabs > arrow.titlebutton:backdrop,
+  .titlebar button.titlebutton:backdrop, button:backdrop, button.flat:backdrop, notebook > header > tabs > 
arrow:backdrop, button.sidebar-button:backdrop, headerbar button.titlebutton:backdrop,
   .titlebar button.titlebutton:backdrop {
     color: #949796;
     border-color: #1f2222;
@@ -440,29 +422,23 @@ headerbar button.titlebutton,
     -gtk-icon-shadow: none;
     box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0);
     -gtk-icon-effect: none; }
-    notebook > header > tabs > arrow:backdrop:active, notebook > header > tabs > arrow:backdrop:checked, 
notebook > header > tabs > arrow.flat:backdrop:active, notebook > header > tabs > arrow.flat:backdrop:checked,
-    button:backdrop:active,
-    button:backdrop:checked,
-    button.flat:backdrop:active,
-    notebook > header > tabs > arrow:backdrop:active,
-    button.sidebar-button:backdrop:active,
-    headerbar button.titlebutton:backdrop:active,
-    .titlebar button.titlebutton:backdrop:active,
-    button.flat:backdrop:checked,
-    notebook > header > tabs > arrow:backdrop:checked,
-    button.sidebar-button:backdrop:checked,
-    headerbar button.titlebutton:backdrop:checked,
+    notebook > header > tabs > arrow:backdrop:active, headerbar button.titlebutton:backdrop:active,
+    .titlebar button.titlebutton:backdrop:active, notebook > header > tabs > arrow:backdrop:checked, 
headerbar button.titlebutton:backdrop:checked,
+    .titlebar button.titlebutton:backdrop:checked, notebook > header > tabs > arrow.flat:backdrop:active, 
headerbar notebook > header > tabs > arrow.titlebutton:backdrop:active, headerbar 
button.titlebutton:backdrop:active,
+    .titlebar notebook > header > tabs > arrow.titlebutton:backdrop:active,
+    .titlebar button.titlebutton:backdrop:active, notebook > header > tabs > arrow.flat:backdrop:checked, 
headerbar notebook > header > tabs > arrow.titlebutton:backdrop:checked, headerbar 
button.titlebutton:backdrop:checked,
+    .titlebar notebook > header > tabs > arrow.titlebutton:backdrop:checked,
+    .titlebar button.titlebutton:backdrop:checked, button:backdrop:active, button:backdrop:checked, 
button.flat:backdrop:active, notebook > header > tabs > arrow:backdrop:active, 
button.sidebar-button:backdrop:active, headerbar button.titlebutton:backdrop:active,
+    .titlebar button.titlebutton:backdrop:active, button.flat:backdrop:checked, notebook > header > tabs > 
arrow:backdrop:checked, button.sidebar-button:backdrop:checked, headerbar button.titlebutton:backdrop:checked,
     .titlebar button.titlebutton:backdrop:checked {
       color: #949796;
       border-color: #1f2222;
       background-image: linear-gradient(to bottom, #303535);
       box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0); }
-    notebook > header > tabs > arrow:backdrop:disabled, notebook > header > tabs > 
arrow.flat:backdrop:disabled,
-    button:backdrop:disabled,
-    button.flat:backdrop:disabled,
-    notebook > header > tabs > arrow:backdrop:disabled,
-    button.sidebar-button:backdrop:disabled,
-    headerbar button.titlebutton:backdrop:disabled,
+    notebook > header > tabs > arrow:backdrop:disabled, headerbar button.titlebutton:backdrop:disabled,
+    .titlebar button.titlebutton:backdrop:disabled, notebook > header > tabs > arrow.flat:backdrop:disabled, 
headerbar notebook > header > tabs > arrow.titlebutton:backdrop:disabled, headerbar 
button.titlebutton:backdrop:disabled,
+    .titlebar notebook > header > tabs > arrow.titlebutton:backdrop:disabled,
+    .titlebar button.titlebutton:backdrop:disabled, button:backdrop:disabled, button.flat:backdrop:disabled, 
notebook > header > tabs > arrow:backdrop:disabled, button.sidebar-button:backdrop:disabled, headerbar 
button.titlebutton:backdrop:disabled,
     .titlebar button.titlebutton:backdrop:disabled {
       color: #5d6767;
       border-color: #1f2222;
@@ -470,38 +446,28 @@ headerbar button.titlebutton,
       text-shadow: none;
       -gtk-icon-shadow: none;
       box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0); }
-    notebook > header > tabs > arrow:backdrop:disabled:active, notebook > header > tabs > 
arrow:backdrop:disabled:checked, notebook > header > tabs > arrow.flat:backdrop:disabled:active, notebook > 
header > tabs > arrow.flat:backdrop:disabled:checked,
-    button:backdrop:disabled:active,
-    button:backdrop:disabled:checked,
-    button.flat:backdrop:disabled:active,
-    notebook > header > tabs > arrow:backdrop:disabled:active,
-    button.sidebar-button:backdrop:disabled:active,
-    headerbar button.titlebutton:backdrop:disabled:active,
-    .titlebar button.titlebutton:backdrop:disabled:active,
-    button.flat:backdrop:disabled:checked,
-    notebook > header > tabs > arrow:backdrop:disabled:checked,
-    button.sidebar-button:backdrop:disabled:checked,
-    headerbar button.titlebutton:backdrop:disabled:checked,
+    notebook > header > tabs > arrow:backdrop:disabled:active, headerbar 
button.titlebutton:backdrop:disabled:active,
+    .titlebar button.titlebutton:backdrop:disabled:active, notebook > header > tabs > 
arrow:backdrop:disabled:checked, headerbar button.titlebutton:backdrop:disabled:checked,
+    .titlebar button.titlebutton:backdrop:disabled:checked, notebook > header > tabs > 
arrow.flat:backdrop:disabled:active, headerbar notebook > header > tabs > 
arrow.titlebutton:backdrop:disabled:active, headerbar button.titlebutton:backdrop:disabled:active,
+    .titlebar notebook > header > tabs > arrow.titlebutton:backdrop:disabled:active,
+    .titlebar button.titlebutton:backdrop:disabled:active, notebook > header > tabs > 
arrow.flat:backdrop:disabled:checked, headerbar notebook > header > tabs > 
arrow.titlebutton:backdrop:disabled:checked, headerbar button.titlebutton:backdrop:disabled:checked,
+    .titlebar notebook > header > tabs > arrow.titlebutton:backdrop:disabled:checked,
+    .titlebar button.titlebutton:backdrop:disabled:checked, button:backdrop:disabled:active, 
button:backdrop:disabled:checked, button.flat:backdrop:disabled:active, notebook > header > tabs > 
arrow:backdrop:disabled:active, button.sidebar-button:backdrop:disabled:active, headerbar 
button.titlebutton:backdrop:disabled:active,
+    .titlebar button.titlebutton:backdrop:disabled:active, button.flat:backdrop:disabled:checked, notebook > 
header > tabs > arrow:backdrop:disabled:checked, button.sidebar-button:backdrop:disabled:checked, headerbar 
button.titlebutton:backdrop:disabled:checked,
     .titlebar button.titlebutton:backdrop:disabled:checked {
       color: #5d6767;
       border-color: #1f2222;
       background-image: linear-gradient(to bottom, #272929);
       box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0); }
-  notebook > header > tabs > arrow.flat:backdrop, notebook > header > tabs > arrow.flat:disabled, notebook > 
header > tabs > arrow.flat:backdrop:disabled,
-  button.flat:backdrop,
-  notebook > header > tabs > arrow:backdrop,
-  button.sidebar-button:backdrop,
-  headerbar button.titlebutton:backdrop,
-  .titlebar button.titlebutton:backdrop,
-  button.flat:disabled,
-  notebook > header > tabs > arrow:disabled,
-  button.sidebar-button:disabled,
-  headerbar button.titlebutton:disabled,
-  .titlebar button.titlebutton:disabled,
-  button.flat:backdrop:disabled,
-  notebook > header > tabs > arrow:backdrop:disabled,
-  button.sidebar-button:backdrop:disabled,
-  headerbar button.titlebutton:backdrop:disabled,
+  notebook > header > tabs > arrow.flat:backdrop, headerbar notebook > header > tabs > 
arrow.titlebutton:backdrop, headerbar button.titlebutton:backdrop,
+  .titlebar notebook > header > tabs > arrow.titlebutton:backdrop,
+  .titlebar button.titlebutton:backdrop, notebook > header > tabs > arrow.flat:disabled, headerbar notebook

header > tabs > arrow.titlebutton:disabled, headerbar button.titlebutton:disabled,

+  .titlebar notebook > header > tabs > arrow.titlebutton:disabled,
+  .titlebar button.titlebutton:disabled, notebook > header > tabs > arrow.flat:backdrop:disabled, headerbar 
notebook > header > tabs > arrow.titlebutton:backdrop:disabled, headerbar 
button.titlebutton:backdrop:disabled,
+  .titlebar notebook > header > tabs > arrow.titlebutton:backdrop:disabled,
+  .titlebar button.titlebutton:backdrop:disabled, button.flat:backdrop, notebook > header > tabs > 
arrow:backdrop, button.sidebar-button:backdrop, headerbar button.titlebutton:backdrop,
+  .titlebar button.titlebutton:backdrop, button.flat:disabled, notebook > header > tabs > arrow:disabled, 
button.sidebar-button:disabled, headerbar button.titlebutton:disabled,
+  .titlebar button.titlebutton:disabled, button.flat:backdrop:disabled, notebook > header > tabs > 
arrow:backdrop:disabled, button.sidebar-button:backdrop:disabled, headerbar 
button.titlebutton:backdrop:disabled,
   .titlebar button.titlebutton:backdrop:disabled {
     border-color: transparent;
     background-color: transparent;
@@ -509,33 +475,52 @@ headerbar button.titlebutton,
     box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0);
     text-shadow: none;
     -gtk-icon-shadow: none; }
-  notebook > header > tabs > arrow:disabled,
-  button:disabled,
-  headerbar button.titlebutton:disabled,
-  .titlebar button.titlebutton:disabled {
+  notebook > header > tabs > arrow:disabled, headerbar button.titlebutton:disabled,
+  .titlebar button.titlebutton:disabled, button:disabled {
     color: #949796;
     border-color: #1c1f1f;
     background-image: linear-gradient(to bottom, #333636);
     text-shadow: none;
     -gtk-icon-shadow: none;
     box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0); }
-    notebook > header > tabs > arrow:disabled:active, notebook > header > tabs > arrow:disabled:checked,
-    button:disabled:active,
-    button:disabled:checked {
+    notebook > header > tabs > arrow:disabled:active, headerbar button.titlebutton:disabled:active,
+    .titlebar button.titlebutton:disabled:active, notebook > header > tabs > arrow:disabled:checked, 
headerbar button.titlebutton:disabled:checked,
+    .titlebar button.titlebutton:disabled:checked, button:disabled:active, button:disabled:checked {
       color: #949796;
       border-color: #1c1f1f;
       background-image: linear-gradient(to bottom, #313434, #333636);
       box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0); }
-  notebook > header > tabs > arrow.osd,
-  button.osd,
-  headerbar button.osd.titlebutton,
-  .titlebar button.osd.titlebutton {
-    color: #eeeeec;
-    border-radius: 5px;
-    outline-color: rgba(238, 238, 236, 0.3);
-    color: #eeeeec;
+  notebook > header > tabs > arrow.text-button, headerbar button.text-button.titlebutton,
+  .titlebar button.text-button.titlebutton, button.text-button {
+    padding-left: 16px;
+    padding-right: 16px; }
+  notebook > header > tabs > arrow.text-button.image-button label:first-child, headerbar 
button.text-button.image-button.titlebutton label:first-child,
+  .titlebar button.text-button.image-button.titlebutton label:first-child, button.text-button.image-button 
label:first-child {
+    padding-left: 8px; }
+  notebook > header > tabs > arrow.text-button.image-button label:last-child, headerbar 
button.text-button.image-button.titlebutton label:last-child,
+  .titlebar button.text-button.image-button.titlebutton label:last-child, button.text-button.image-button 
label:last-child {
+    padding-right: 8px; }
+button.osd {
+  color: #eeeeec;
+  border-radius: 5px;
+  outline-color: rgba(238, 238, 236, 0.3);
+  color: #eeeeec;
+  border-color: rgba(0, 0, 0, 0.7);
+  background-image: linear-gradient(to bottom, rgba(32, 37, 38, 0.8));
+  background-clip: padding-box;
+  box-shadow: inset 0 1px rgba(255, 255, 255, 0.1);
+  text-shadow: 0 1px black;
+  -gtk-icon-shadow: 0 1px black;
+  outline-color: rgba(238, 238, 236, 0.3);
+  border: none;
+  box-shadow: none; }
+  button.osd.image-button {
+    min-height: 48px;
+    min-width: 48px; }
+  button.osd:hover {
+    color: white;
     border-color: rgba(0, 0, 0, 0.7);
-    background-image: linear-gradient(to bottom, rgba(32, 37, 38, 0.8));
+    background-image: linear-gradient(to bottom, rgba(60, 69, 71, 0.8));
     background-clip: padding-box;
     box-shadow: inset 0 1px rgba(255, 255, 255, 0.1);
     text-shadow: 0 1px black;
@@ -543,12 +528,107 @@ headerbar button.titlebutton,
     outline-color: rgba(238, 238, 236, 0.3);
     border: none;
     box-shadow: none; }
-    notebook > header > tabs > arrow.osd.image-button,
-    button.osd.image-button {
-      min-height: 48px;
-      min-width: 48px; }
-    notebook > header > tabs > arrow.osd:hover,
-    button.osd:hover {
+  button.osd:active, button.osd:checked {
+    color: white;
+    border-color: rgba(0, 0, 0, 0.7);
+    background-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.7));
+    background-clip: padding-box;
+    box-shadow: none;
+    text-shadow: none;
+    -gtk-icon-shadow: none;
+    outline-color: rgba(238, 238, 236, 0.3);
+    border: none;
+    box-shadow: none; }
+  button.osd:disabled, button.osd:backdrop:disabled {
+    color: #878a89;
+    border-color: rgba(0, 0, 0, 0.7);
+    background-image: linear-gradient(to bottom, rgba(53, 57, 58, 0.5));
+    background-clip: padding-box;
+    box-shadow: none;
+    text-shadow: none;
+    -gtk-icon-shadow: none;
+    border: none; }
+  button.osd:backdrop {
+    color: #eeeeec;
+    border-color: rgba(0, 0, 0, 0.7);
+    background-image: linear-gradient(to bottom, rgba(32, 37, 38, 0.8));
+    background-clip: padding-box;
+    box-shadow: none;
+    text-shadow: none;
+    -gtk-icon-shadow: none;
+    border: none; }
+popover.background.touch-selection button, popover.background.magnifier button, .csd 
popover.background.touch-selection button, .csd popover.background.magnifier button, .app-notification button,
+.app-notification.frame button, .osd button {
+  color: #eeeeec;
+  border-color: rgba(0, 0, 0, 0.7);
+  background-image: linear-gradient(to bottom, rgba(32, 37, 38, 0.8));
+  background-clip: padding-box;
+  box-shadow: inset 0 1px rgba(255, 255, 255, 0.1);
+  text-shadow: 0 1px black;
+  -gtk-icon-shadow: 0 1px black;
+  outline-color: rgba(238, 238, 236, 0.3); }
+  popover.background.touch-selection button:hover, popover.background.magnifier button:hover, 
.app-notification button:hover, .osd button:hover {
+    color: white;
+    border-color: rgba(0, 0, 0, 0.7);
+    background-image: linear-gradient(to bottom, rgba(60, 69, 71, 0.8));
+    background-clip: padding-box;
+    box-shadow: inset 0 1px rgba(255, 255, 255, 0.1);
+    text-shadow: 0 1px black;
+    -gtk-icon-shadow: 0 1px black;
+    outline-color: rgba(238, 238, 236, 0.3); }
+  popover.background.touch-selection button:active, popover.background.magnifier button:active, 
.app-notification button:active, popover.background.touch-selection button:checked, 
popover.background.magnifier button:checked, .app-notification button:checked, 
popover.background.touch-selection button:backdrop:active, popover.background.magnifier 
button:backdrop:active, .app-notification button:backdrop:active, popover.background.touch-selection 
button:backdrop:checked, popover.background.magnifier button:backdrop:checked, .app-notification 
button:backdrop:checked, .osd button:active, .osd button:checked, .osd button:backdrop:active, .osd 
button:backdrop:checked {
+    color: white;
+    border-color: rgba(0, 0, 0, 0.7);
+    background-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.7));
+    background-clip: padding-box;
+    box-shadow: none;
+    text-shadow: none;
+    -gtk-icon-shadow: none;
+    outline-color: rgba(238, 238, 236, 0.3); }
+  popover.background.touch-selection button:disabled, popover.background.magnifier button:disabled, 
.app-notification button:disabled, popover.background.touch-selection button:backdrop:disabled, 
popover.background.magnifier button:backdrop:disabled, .app-notification button:backdrop:disabled, .osd 
button:disabled, .osd button:backdrop:disabled {
+    color: #878a89;
+    border-color: rgba(0, 0, 0, 0.7);
+    background-image: linear-gradient(to bottom, rgba(53, 57, 58, 0.5));
+    background-clip: padding-box;
+    box-shadow: none;
+    text-shadow: none;
+    -gtk-icon-shadow: none; }
+  popover.background.touch-selection button:backdrop, popover.background.magnifier button:backdrop, 
.app-notification button:backdrop, .osd button:backdrop {
+    color: #eeeeec;
+    border-color: rgba(0, 0, 0, 0.7);
+    background-image: linear-gradient(to bottom, rgba(32, 37, 38, 0.8));
+    background-clip: padding-box;
+    box-shadow: none;
+    text-shadow: none;
+    -gtk-icon-shadow: none; }
+  popover.background.touch-selection button.flat, popover.background.touch-selection notebook > header > 
tabs > arrow, popover.background.touch-selection button.sidebar-button, popover.background.touch-selection 
headerbar button.titlebutton, headerbar popover.background.touch-selection button.titlebutton,
+  popover.background.touch-selection .titlebar button.titlebutton,
+  .titlebar popover.background.touch-selection button.titlebutton, popover.background.magnifier button.flat, 
popover.background.magnifier notebook > header > tabs > arrow, popover.background.magnifier 
button.sidebar-button, popover.background.magnifier headerbar button.titlebutton, headerbar 
popover.background.magnifier button.titlebutton,
+  popover.background.magnifier .titlebar button.titlebutton,
+  .titlebar popover.background.magnifier button.titlebutton, .csd popover.background.touch-selection 
notebook > header > tabs > arrow, .csd popover.background.magnifier notebook > header > tabs > arrow, 
.app-notification button.flat, .app-notification notebook > header > tabs > arrow, .app-notification 
button.sidebar-button, .app-notification headerbar button.titlebutton, headerbar .app-notification 
button.titlebutton,
+  .app-notification .titlebar button.titlebutton,
+  .titlebar .app-notification button.titlebutton,
+  .app-notification.frame notebook > header > tabs > arrow, .osd button.flat, .osd notebook > header > tabs

arrow, .osd button.sidebar-button, .osd headerbar button.titlebutton, headerbar .osd button.titlebutton,

+  .osd .titlebar button.titlebutton,
+  .titlebar .osd button.titlebutton {
+    border-color: transparent;
+    background-color: transparent;
+    background-image: none;
+    box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0);
+    text-shadow: none;
+    -gtk-icon-shadow: none;
+    box-shadow: none;
+    text-shadow: 0 1px black;
+    -gtk-icon-shadow: 0 1px black; }
+    popover.background.touch-selection button.flat:hover, popover.background.touch-selection notebook > 
header > tabs > arrow:hover, popover.background.touch-selection button.sidebar-button:hover, 
popover.background.touch-selection headerbar button.titlebutton:hover, headerbar 
popover.background.touch-selection button.titlebutton:hover,
+    popover.background.touch-selection .titlebar button.titlebutton:hover,
+    .titlebar popover.background.touch-selection button.titlebutton:hover, popover.background.magnifier 
button.flat:hover, popover.background.magnifier notebook > header > tabs > arrow:hover, 
popover.background.magnifier button.sidebar-button:hover, popover.background.magnifier headerbar 
button.titlebutton:hover, headerbar popover.background.magnifier button.titlebutton:hover,
+    popover.background.magnifier .titlebar button.titlebutton:hover,
+    .titlebar popover.background.magnifier button.titlebutton:hover, .app-notification button.flat:hover, 
.app-notification notebook > header > tabs > arrow:hover, .app-notification button.sidebar-button:hover, 
.app-notification headerbar button.titlebutton:hover, headerbar .app-notification button.titlebutton:hover,
+    .app-notification .titlebar button.titlebutton:hover,
+    .titlebar .app-notification button.titlebutton:hover, .osd button.flat:hover, .osd notebook > header > 
tabs > arrow:hover, .osd button.sidebar-button:hover, .osd headerbar button.titlebutton:hover, headerbar .osd 
button.titlebutton:hover,
+    .osd .titlebar button.titlebutton:hover,
+    .titlebar .osd button.titlebutton:hover {
       color: white;
       border-color: rgba(0, 0, 0, 0.7);
       background-image: linear-gradient(to bottom, rgba(60, 69, 71, 0.8));
@@ -556,84 +636,186 @@ headerbar button.titlebutton,
       box-shadow: inset 0 1px rgba(255, 255, 255, 0.1);
       text-shadow: 0 1px black;
       -gtk-icon-shadow: 0 1px black;
-      outline-color: rgba(238, 238, 236, 0.3);
-      border: none;
-      box-shadow: none; }
-    notebook > header > tabs > arrow.osd:active, notebook > header > tabs > arrow.osd:checked,
-    button.osd:active,
-    button.osd:checked {
-      color: white;
+      outline-color: rgba(238, 238, 236, 0.3); }
+    popover.background.touch-selection button.flat:disabled, popover.background.touch-selection notebook > 
header > tabs > arrow:disabled, popover.background.touch-selection button.sidebar-button:disabled, 
popover.background.touch-selection headerbar button.titlebutton:disabled, headerbar 
popover.background.touch-selection button.titlebutton:disabled,
+    popover.background.touch-selection .titlebar button.titlebutton:disabled,
+    .titlebar popover.background.touch-selection button.titlebutton:disabled, popover.background.magnifier 
button.flat:disabled, popover.background.magnifier notebook > header > tabs > arrow:disabled, 
popover.background.magnifier button.sidebar-button:disabled, popover.background.magnifier headerbar 
button.titlebutton:disabled, headerbar popover.background.magnifier button.titlebutton:disabled,
+    popover.background.magnifier .titlebar button.titlebutton:disabled,
+    .titlebar popover.background.magnifier button.titlebutton:disabled, .app-notification 
button.flat:disabled, .app-notification notebook > header > tabs > arrow:disabled, .app-notification 
button.sidebar-button:disabled, .app-notification headerbar button.titlebutton:disabled, headerbar 
.app-notification button.titlebutton:disabled,
+    .app-notification .titlebar button.titlebutton:disabled,
+    .titlebar .app-notification button.titlebutton:disabled, .osd button.flat:disabled, .osd notebook > 
header > tabs > arrow:disabled, .osd button.sidebar-button:disabled, .osd headerbar 
button.titlebutton:disabled, headerbar .osd button.titlebutton:disabled,
+    .osd .titlebar button.titlebutton:disabled,
+    .titlebar .osd button.titlebutton:disabled {
+      color: #878a89;
       border-color: rgba(0, 0, 0, 0.7);
-      background-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.7));
+      background-image: linear-gradient(to bottom, rgba(53, 57, 58, 0.5));
       background-clip: padding-box;
       box-shadow: none;
       text-shadow: none;
       -gtk-icon-shadow: none;
-      outline-color: rgba(238, 238, 236, 0.3);
-      border: none;
+      background-image: none;
+      border-color: transparent;
       box-shadow: none; }
-    notebook > header > tabs > arrow.osd:disabled, notebook > header > tabs > arrow.osd:backdrop:disabled,
-    button.osd:disabled,
-    button.osd:backdrop:disabled {
-      color: #878a89;
+    popover.background.touch-selection button.flat:backdrop, popover.background.touch-selection notebook > 
header > tabs > arrow:backdrop, popover.background.touch-selection button.sidebar-button:backdrop, 
popover.background.touch-selection headerbar button.titlebutton:backdrop, headerbar 
popover.background.touch-selection button.titlebutton:backdrop,
+    popover.background.touch-selection .titlebar button.titlebutton:backdrop,
+    .titlebar popover.background.touch-selection button.titlebutton:backdrop, popover.background.magnifier 
button.flat:backdrop, popover.background.magnifier notebook > header > tabs > arrow:backdrop, 
popover.background.magnifier button.sidebar-button:backdrop, popover.background.magnifier headerbar 
button.titlebutton:backdrop, headerbar popover.background.magnifier button.titlebutton:backdrop,
+    popover.background.magnifier .titlebar button.titlebutton:backdrop,
+    .titlebar popover.background.magnifier button.titlebutton:backdrop, .app-notification 
button.flat:backdrop, .app-notification notebook > header > tabs > arrow:backdrop, .app-notification 
button.sidebar-button:backdrop, .app-notification headerbar button.titlebutton:backdrop, headerbar 
.app-notification button.titlebutton:backdrop,
+    .app-notification .titlebar button.titlebutton:backdrop,
+    .titlebar .app-notification button.titlebutton:backdrop, .osd button.flat:backdrop, .osd notebook > 
header > tabs > arrow:backdrop, .osd button.sidebar-button:backdrop, .osd headerbar 
button.titlebutton:backdrop, headerbar .osd button.titlebutton:backdrop,
+    .osd .titlebar button.titlebutton:backdrop,
+    .titlebar .osd button.titlebutton:backdrop {
+      border-color: transparent;
+      background-color: transparent;
+      background-image: none;
+      box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0);
+      text-shadow: none;
+      -gtk-icon-shadow: none; }
+    popover.background.touch-selection button.flat:active, popover.background.touch-selection notebook > 
header > tabs > arrow:active, popover.background.touch-selection button.sidebar-button:active, 
popover.background.touch-selection headerbar button.titlebutton:active, headerbar 
popover.background.touch-selection button.titlebutton:active,
+    popover.background.touch-selection .titlebar button.titlebutton:active,
+    .titlebar popover.background.touch-selection button.titlebutton:active, popover.background.magnifier 
button.flat:active, popover.background.magnifier notebook > header > tabs > arrow:active, 
popover.background.magnifier button.sidebar-button:active, popover.background.magnifier headerbar 
button.titlebutton:active, headerbar popover.background.magnifier button.titlebutton:active,
+    popover.background.magnifier .titlebar button.titlebutton:active,
+    .titlebar popover.background.magnifier button.titlebutton:active, .app-notification button.flat:active, 
.app-notification notebook > header > tabs > arrow:active, .app-notification button.sidebar-button:active, 
.app-notification headerbar button.titlebutton:active, headerbar .app-notification button.titlebutton:active,
+    .app-notification .titlebar button.titlebutton:active,
+    .titlebar .app-notification button.titlebutton:active, popover.background.touch-selection 
button.flat:checked, popover.background.touch-selection notebook > header > tabs > arrow:checked, 
popover.background.touch-selection button.sidebar-button:checked, popover.background.touch-selection 
headerbar button.titlebutton:checked, headerbar popover.background.touch-selection button.titlebutton:checked,
+    popover.background.touch-selection .titlebar button.titlebutton:checked,
+    .titlebar popover.background.touch-selection button.titlebutton:checked, popover.background.magnifier 
button.flat:checked, popover.background.magnifier notebook > header > tabs > arrow:checked, 
popover.background.magnifier button.sidebar-button:checked, popover.background.magnifier headerbar 
button.titlebutton:checked, headerbar popover.background.magnifier button.titlebutton:checked,
+    popover.background.magnifier .titlebar button.titlebutton:checked,
+    .titlebar popover.background.magnifier button.titlebutton:checked, .app-notification 
button.flat:checked, .app-notification notebook > header > tabs > arrow:checked, .app-notification 
button.sidebar-button:checked, .app-notification headerbar button.titlebutton:checked, headerbar 
.app-notification button.titlebutton:checked,
+    .app-notification .titlebar button.titlebutton:checked,
+    .titlebar .app-notification button.titlebutton:checked, .osd button.flat:active, .osd notebook > header

tabs > arrow:active, .osd button.sidebar-button:active, .osd headerbar button.titlebutton:active, headerbar

.osd button.titlebutton:active,
+    .osd .titlebar button.titlebutton:active,
+    .titlebar .osd button.titlebutton:active, .osd button.flat:checked, .osd notebook > header > tabs > 
arrow:checked, .osd button.sidebar-button:checked, .osd headerbar button.titlebutton:checked, headerbar .osd 
button.titlebutton:checked,
+    .osd .titlebar button.titlebutton:checked,
+    .titlebar .osd button.titlebutton:checked {
+      color: white;
       border-color: rgba(0, 0, 0, 0.7);
-      background-image: linear-gradient(to bottom, rgba(53, 57, 58, 0.5));
+      background-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.7));
       background-clip: padding-box;
       box-shadow: none;
       text-shadow: none;
       -gtk-icon-shadow: none;
-      border: none; }
-    notebook > header > tabs > arrow.osd:backdrop,
-    button.osd:backdrop {
-      color: #eeeeec;
-      border-color: rgba(0, 0, 0, 0.7);
-      background-image: linear-gradient(to bottom, rgba(32, 37, 38, 0.8));
-      background-clip: padding-box;
-      box-shadow: none;
+      outline-color: rgba(238, 238, 236, 0.3); }
+button.suggested-action {
+  color: white;
+  outline-color: rgba(255, 255, 255, 0.3);
+  border-color: #0b1e33;
+  background-image: linear-gradient(to bottom, #1f5894, #1d538b 60%, #1b4e83);
+  text-shadow: 0 -1px rgba(0, 0, 0, 0.70353);
+  -gtk-icon-shadow: 0 -1px rgba(0, 0, 0, 0.70353);
+  box-shadow: inset 0 1px rgba(255, 255, 255, 0.05), 0 1px rgba(238, 238, 236, 0); }
+  button.suggested-action.flat, notebook > header > tabs > arrow.suggested-action, 
button.suggested-action.sidebar-button, headerbar button.suggested-action.titlebutton,
+  .titlebar button.suggested-action.titlebutton {
+    border-color: transparent;
+    background-color: transparent;
+    background-image: none;
+    box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0);
+    text-shadow: none;
+    -gtk-icon-shadow: none;
+    color: #215d9c; }
+  button.suggested-action:hover {
+    color: white;
+    outline-color: rgba(255, 255, 255, 0.3);
+    border-color: #0b1e33;
+    /*
+    background-image: linear-gradient(to bottom,
+                                      lighten($c, 16%),
+                                      lighten($c, 6%) 40%,
+                                      lighten($c, 2%));
+    */
+    background-image: linear-gradient(to bottom, #2260a0, #1f5894 60%, #1d538b);
+    text-shadow: 0 -1px rgba(0, 0, 0, 0.65553);
+    -gtk-icon-shadow: 0 -1px rgba(0, 0, 0, 0.65553);
+    box-shadow: inset 0 1px rgba(255, 255, 255, 0.05), 0 1px rgba(238, 238, 236, 0); }
+  button.suggested-action:active, button.suggested-action:checked {
+    color: white;
+    outline-color: rgba(255, 255, 255, 0.3);
+    border-color: #0b1e33;
+    background-image: linear-gradient(to bottom, #194776, #1c5187);
+    text-shadow: 0 -1px rgba(0, 0, 0, 0.78353);
+    -gtk-icon-shadow: 0 -1px rgba(0, 0, 0, 0.78353);
+    box-shadow: inset 0 2px 1px -2px rgba(0, 0, 0, 0.6), 0 1px rgba(238, 238, 236, 0); }
+  button.suggested-action:backdrop, button.suggested-action.flat:backdrop, notebook > header > tabs > 
arrow.suggested-action:backdrop, button.suggested-action.sidebar-button:backdrop, headerbar 
button.suggested-action.titlebutton:backdrop,
+  .titlebar button.suggested-action.titlebutton:backdrop {
+    color: #d3dfeb;
+    border-color: #0b1e33;
+    background-image: linear-gradient(to bottom, #215d9c);
+    text-shadow: none;
+    -gtk-icon-shadow: none;
+    box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0); }
+    button.suggested-action:backdrop:active, button.suggested-action:backdrop:checked, 
button.suggested-action.flat:backdrop:active, notebook > header > tabs > 
arrow.suggested-action:backdrop:active, button.suggested-action.sidebar-button:backdrop:active, headerbar 
button.suggested-action.titlebutton:backdrop:active,
+    .titlebar button.suggested-action.titlebutton:backdrop:active, 
button.suggested-action.flat:backdrop:checked, notebook > header > tabs > 
arrow.suggested-action:backdrop:checked, button.suggested-action.sidebar-button:backdrop:checked, headerbar 
button.suggested-action.titlebutton:backdrop:checked,
+    .titlebar button.suggested-action.titlebutton:backdrop:checked {
+      color: #d1dae3;
+      border-color: #0b1e33;
+      background-image: linear-gradient(to bottom, #184472);
+      box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0); }
+    button.suggested-action:backdrop:disabled, button.suggested-action.flat:backdrop:disabled, notebook > 
header > tabs > arrow.suggested-action:backdrop:disabled, 
button.suggested-action.sidebar-button:backdrop:disabled, headerbar 
button.suggested-action.titlebutton:backdrop:disabled,
+    .titlebar button.suggested-action.titlebutton:backdrop:disabled {
+      color: #5d6767;
+      border-color: #1f2222;
+      background-image: linear-gradient(to bottom, #333636);
       text-shadow: none;
       -gtk-icon-shadow: none;
-      border: none; }
-  popover.background.touch-selection button, popover.background.magnifier button, .csd 
popover.background.touch-selection button, .csd popover.background.magnifier button, .app-notification 
button, .app-notification headerbar button.titlebutton, headerbar .app-notification button.titlebutton,
-  .app-notification .titlebar button.titlebutton,
-  .titlebar .app-notification button.titlebutton,
-  .app-notification.frame button, .osd notebook > header > tabs > arrow, .osd
-  button, .osd headerbar button.titlebutton, headerbar .osd button.titlebutton,
-  .osd .titlebar button.titlebutton,
-  .titlebar .osd button.titlebutton {
+      box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0); }
+      button.suggested-action:backdrop:disabled:active, button.suggested-action:backdrop:disabled:checked, 
button.suggested-action.flat:backdrop:disabled:active, notebook > header > tabs > 
arrow.suggested-action:backdrop:disabled:active, 
button.suggested-action.sidebar-button:backdrop:disabled:active, headerbar 
button.suggested-action.titlebutton:backdrop:disabled:active,
+      .titlebar button.suggested-action.titlebutton:backdrop:disabled:active, 
button.suggested-action.flat:backdrop:disabled:checked, notebook > header > tabs > 
arrow.suggested-action:backdrop:disabled:checked, 
button.suggested-action.sidebar-button:backdrop:disabled:checked, headerbar 
button.suggested-action.titlebutton:backdrop:disabled:checked,
+      .titlebar button.suggested-action.titlebutton:backdrop:disabled:checked {
+        color: #6c88a7;
+        border-color: #0b1e33;
+        background-image: linear-gradient(to bottom, #1d4877);
+        box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0); }
+  button.suggested-action.flat:backdrop, notebook > header > tabs > arrow.suggested-action:backdrop, 
button.suggested-action.sidebar-button:backdrop, headerbar button.suggested-action.titlebutton:backdrop,
+  .titlebar button.suggested-action.titlebutton:backdrop, button.suggested-action.flat:disabled, notebook > 
header > tabs > arrow.suggested-action:disabled, button.suggested-action.sidebar-button:disabled, headerbar 
button.suggested-action.titlebutton:disabled,
+  .titlebar button.suggested-action.titlebutton:disabled, button.suggested-action.flat:backdrop:disabled, 
notebook > header > tabs > arrow.suggested-action:backdrop:disabled, 
button.suggested-action.sidebar-button:backdrop:disabled, headerbar 
button.suggested-action.titlebutton:backdrop:disabled,
+  .titlebar button.suggested-action.titlebutton:backdrop:disabled {
+    border-color: transparent;
+    background-color: transparent;
+    background-image: none;
+    box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0);
+    text-shadow: none;
+    -gtk-icon-shadow: none;
+    color: rgba(33, 93, 156, 0.8); }
+  button.suggested-action:disabled {
+    color: #949796;
+    border-color: #1c1f1f;
+    background-image: linear-gradient(to bottom, #333636);
+    text-shadow: none;
+    -gtk-icon-shadow: none;
+    box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0); }
+    button.suggested-action:disabled:active, button.suggested-action:disabled:checked {
+      color: #a5b6c9;
+      border-color: #0b1e33;
+      background-image: linear-gradient(to bottom, #1b4470, #1d4877);
+      box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0); }
+  .osd button.suggested-action {
     color: #eeeeec;
     border-color: rgba(0, 0, 0, 0.7);
-    background-image: linear-gradient(to bottom, rgba(32, 37, 38, 0.8));
+    background-image: linear-gradient(to bottom, rgba(33, 93, 156, 0.5));
     background-clip: padding-box;
     box-shadow: inset 0 1px rgba(255, 255, 255, 0.1);
     text-shadow: 0 1px black;
     -gtk-icon-shadow: 0 1px black;
     outline-color: rgba(238, 238, 236, 0.3); }
-    popover.background.touch-selection button:hover, popover.background.magnifier button:hover, 
.app-notification button:hover, .osd notebook > header > tabs > arrow:hover, .osd
-    button:hover {
+    .osd button.suggested-action:hover {
       color: white;
       border-color: rgba(0, 0, 0, 0.7);
-      background-image: linear-gradient(to bottom, rgba(60, 69, 71, 0.8));
+      background-image: linear-gradient(to bottom, rgba(33, 93, 156, 0.7));
       background-clip: padding-box;
       box-shadow: inset 0 1px rgba(255, 255, 255, 0.1);
       text-shadow: 0 1px black;
       -gtk-icon-shadow: 0 1px black;
       outline-color: rgba(238, 238, 236, 0.3); }
-    popover.background.touch-selection button:active, popover.background.magnifier button:active, 
.app-notification button:active, popover.background.touch-selection button:checked, 
popover.background.magnifier button:checked, .app-notification button:checked, 
popover.background.touch-selection button:backdrop:active, popover.background.magnifier 
button:backdrop:active, .app-notification button:backdrop:active, popover.background.touch-selection 
button:backdrop:checked, popover.background.magnifier button:backdrop:checked, .app-notification 
button:backdrop:checked, .osd notebook > header > tabs > arrow:active, .osd notebook > header > tabs > 
arrow:checked, .osd notebook > header > tabs > arrow:backdrop:active, .osd notebook > header > tabs > 
arrow:backdrop:checked, .osd
-    button:active, .osd
-    button:checked, .osd
-    button:backdrop:active, .osd
-    button:backdrop:checked {
+    .osd button.suggested-action:active, .osd button.suggested-action:checked, .osd 
button.suggested-action:backdrop:active, .osd button.suggested-action:backdrop:checked {
       color: white;
       border-color: rgba(0, 0, 0, 0.7);
-      background-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.7));
+      background-image: linear-gradient(to bottom, #215d9c);
       background-clip: padding-box;
       box-shadow: none;
       text-shadow: none;
       -gtk-icon-shadow: none;
       outline-color: rgba(238, 238, 236, 0.3); }
-    popover.background.touch-selection button:disabled, popover.background.magnifier button:disabled, 
.app-notification button:disabled, popover.background.touch-selection button:backdrop:disabled, 
popover.background.magnifier button:backdrop:disabled, .app-notification button:backdrop:disabled, .osd 
notebook > header > tabs > arrow:disabled, .osd notebook > header > tabs > arrow:backdrop:disabled, .osd
-    button:disabled, .osd
-    button:backdrop:disabled {
+    .osd button.suggested-action:disabled, .osd button.suggested-action:backdrop:disabled {
       color: #878a89;
       border-color: rgba(0, 0, 0, 0.7);
       background-image: linear-gradient(to bottom, rgba(53, 57, 58, 0.5));
@@ -641,598 +823,186 @@ headerbar button.titlebutton,
       box-shadow: none;
       text-shadow: none;
       -gtk-icon-shadow: none; }
-    popover.background.touch-selection button:backdrop, popover.background.magnifier button:backdrop, 
.app-notification button:backdrop, .osd notebook > header > tabs > arrow:backdrop, .osd
-    button:backdrop {
+    .osd button.suggested-action:backdrop {
       color: #eeeeec;
       border-color: rgba(0, 0, 0, 0.7);
-      background-image: linear-gradient(to bottom, rgba(32, 37, 38, 0.8));
+      background-image: linear-gradient(to bottom, rgba(33, 93, 156, 0.5));
       background-clip: padding-box;
       box-shadow: none;
       text-shadow: none;
       -gtk-icon-shadow: none; }
-    popover.background.touch-selection button.flat, popover.background.touch-selection notebook > header > 
tabs > arrow, popover.background.touch-selection button.sidebar-button, popover.background.touch-selection 
headerbar button.titlebutton, headerbar popover.background.touch-selection button.titlebutton,
-    popover.background.touch-selection .titlebar button.titlebutton,
-    .titlebar popover.background.touch-selection button.titlebutton, popover.background.magnifier 
button.flat, popover.background.magnifier notebook > header > tabs > arrow, popover.background.magnifier 
button.sidebar-button, popover.background.magnifier headerbar button.titlebutton, headerbar 
popover.background.magnifier button.titlebutton,
-    popover.background.magnifier .titlebar button.titlebutton,
-    .titlebar popover.background.magnifier button.titlebutton, .csd popover.background.touch-selection 
notebook > header > tabs > arrow, .csd popover.background.magnifier notebook > header > tabs > arrow, 
.app-notification button.flat, .app-notification notebook > header > tabs > arrow, .app-notification 
button.sidebar-button, .app-notification headerbar button.titlebutton, headerbar .app-notification 
button.titlebutton,
-    .app-notification .titlebar button.titlebutton,
-    .titlebar .app-notification button.titlebutton,
-    .app-notification.frame notebook > header > tabs > arrow, .osd notebook > header > tabs > arrow.flat, 
.osd
-    button.flat, .osd notebook > header > tabs > arrow, .osd
-    button.sidebar-button, .osd headerbar button.titlebutton, headerbar .osd button.titlebutton,
-    .osd .titlebar button.titlebutton,
-    .titlebar .osd button.titlebutton {
-      border-color: transparent;
-      background-color: transparent;
-      background-image: none;
-      box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0);
-      text-shadow: none;
-      -gtk-icon-shadow: none;
-      box-shadow: none;
-      text-shadow: 0 1px black;
-      -gtk-icon-shadow: 0 1px black; }
-      popover.background.touch-selection button.flat:hover, popover.background.touch-selection notebook > 
header > tabs > arrow:hover, popover.background.touch-selection button.sidebar-button:hover, 
popover.background.touch-selection headerbar button.titlebutton:hover, headerbar 
popover.background.touch-selection button.titlebutton:hover,
-      popover.background.touch-selection .titlebar button.titlebutton:hover,
-      .titlebar popover.background.touch-selection button.titlebutton:hover, popover.background.magnifier 
button.flat:hover, popover.background.magnifier notebook > header > tabs > arrow:hover, 
popover.background.magnifier button.sidebar-button:hover, popover.background.magnifier headerbar 
button.titlebutton:hover, headerbar popover.background.magnifier button.titlebutton:hover,
-      popover.background.magnifier .titlebar button.titlebutton:hover,
-      .titlebar popover.background.magnifier button.titlebutton:hover, .app-notification button.flat:hover, 
.app-notification notebook > header > tabs > arrow:hover, .app-notification button.sidebar-button:hover, 
.app-notification headerbar button.titlebutton:hover, headerbar .app-notification button.titlebutton:hover,
-      .app-notification .titlebar button.titlebutton:hover,
-      .titlebar .app-notification button.titlebutton:hover, .osd notebook > header > tabs > 
arrow.flat:hover, .osd
-      button.flat:hover, .osd notebook > header > tabs > arrow:hover, .osd
-      button.sidebar-button:hover, .osd headerbar button.titlebutton:hover, headerbar .osd 
button.titlebutton:hover,
-      .osd .titlebar button.titlebutton:hover,
-      .titlebar .osd button.titlebutton:hover {
-        color: white;
-        border-color: rgba(0, 0, 0, 0.7);
-        background-image: linear-gradient(to bottom, rgba(60, 69, 71, 0.8));
-        background-clip: padding-box;
-        box-shadow: inset 0 1px rgba(255, 255, 255, 0.1);
-        text-shadow: 0 1px black;
-        -gtk-icon-shadow: 0 1px black;
-        outline-color: rgba(238, 238, 236, 0.3); }
-      popover.background.touch-selection button.flat:disabled, popover.background.touch-selection notebook > 
header > tabs > arrow:disabled, popover.background.touch-selection button.sidebar-button:disabled, 
popover.background.touch-selection headerbar button.titlebutton:disabled, headerbar 
popover.background.touch-selection button.titlebutton:disabled,
-      popover.background.touch-selection .titlebar button.titlebutton:disabled,
-      .titlebar popover.background.touch-selection button.titlebutton:disabled, popover.background.magnifier 
button.flat:disabled, popover.background.magnifier notebook > header > tabs > arrow:disabled, 
popover.background.magnifier button.sidebar-button:disabled, popover.background.magnifier headerbar 
button.titlebutton:disabled, headerbar popover.background.magnifier button.titlebutton:disabled,
-      popover.background.magnifier .titlebar button.titlebutton:disabled,
-      .titlebar popover.background.magnifier button.titlebutton:disabled, .app-notification 
button.flat:disabled, .app-notification notebook > header > tabs > arrow:disabled, .app-notification 
button.sidebar-button:disabled, .app-notification headerbar button.titlebutton:disabled, headerbar 
.app-notification button.titlebutton:disabled,
-      .app-notification .titlebar button.titlebutton:disabled,
-      .titlebar .app-notification button.titlebutton:disabled, .osd notebook > header > tabs > 
arrow.flat:disabled, .osd
-      button.flat:disabled, .osd notebook > header > tabs > arrow:disabled, .osd
-      button.sidebar-button:disabled, .osd headerbar button.titlebutton:disabled, headerbar .osd 
button.titlebutton:disabled,
-      .osd .titlebar button.titlebutton:disabled,
-      .titlebar .osd button.titlebutton:disabled {
-        color: #878a89;
-        border-color: rgba(0, 0, 0, 0.7);
-        background-image: linear-gradient(to bottom, rgba(53, 57, 58, 0.5));
-        background-clip: padding-box;
-        box-shadow: none;
-        text-shadow: none;
-        -gtk-icon-shadow: none;
-        background-image: none;
-        border-color: transparent;
-        box-shadow: none; }
-      popover.background.touch-selection button.flat:backdrop, popover.background.touch-selection notebook > 
header > tabs > arrow:backdrop, popover.background.touch-selection button.sidebar-button:backdrop, 
popover.background.touch-selection headerbar button.titlebutton:backdrop, headerbar 
popover.background.touch-selection button.titlebutton:backdrop,
-      popover.background.touch-selection .titlebar button.titlebutton:backdrop,
-      .titlebar popover.background.touch-selection button.titlebutton:backdrop, popover.background.magnifier 
button.flat:backdrop, popover.background.magnifier notebook > header > tabs > arrow:backdrop, 
popover.background.magnifier button.sidebar-button:backdrop, popover.background.magnifier headerbar 
button.titlebutton:backdrop, headerbar popover.background.magnifier button.titlebutton:backdrop,
-      popover.background.magnifier .titlebar button.titlebutton:backdrop,
-      .titlebar popover.background.magnifier button.titlebutton:backdrop, .app-notification 
button.flat:backdrop, .app-notification notebook > header > tabs > arrow:backdrop, .app-notification 
button.sidebar-button:backdrop, .app-notification headerbar button.titlebutton:backdrop, headerbar 
.app-notification button.titlebutton:backdrop,
-      .app-notification .titlebar button.titlebutton:backdrop,
-      .titlebar .app-notification button.titlebutton:backdrop, .osd notebook > header > tabs > 
arrow.flat:backdrop, .osd
-      button.flat:backdrop, .osd notebook > header > tabs > arrow:backdrop, .osd
-      button.sidebar-button:backdrop, .osd headerbar button.titlebutton:backdrop, headerbar .osd 
button.titlebutton:backdrop,
-      .osd .titlebar button.titlebutton:backdrop,
-      .titlebar .osd button.titlebutton:backdrop {
-        border-color: transparent;
-        background-color: transparent;
-        background-image: none;
-        box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0);
-        text-shadow: none;
-        -gtk-icon-shadow: none; }
-      popover.background.touch-selection button.flat:active, popover.background.touch-selection notebook > 
header > tabs > arrow:active, popover.background.touch-selection button.sidebar-button:active, 
popover.background.touch-selection headerbar button.titlebutton:active, headerbar 
popover.background.touch-selection button.titlebutton:active,
-      popover.background.touch-selection .titlebar button.titlebutton:active,
-      .titlebar popover.background.touch-selection button.titlebutton:active, popover.background.magnifier 
button.flat:active, popover.background.magnifier notebook > header > tabs > arrow:active, 
popover.background.magnifier button.sidebar-button:active, popover.background.magnifier headerbar 
button.titlebutton:active, headerbar popover.background.magnifier button.titlebutton:active,
-      popover.background.magnifier .titlebar button.titlebutton:active,
-      .titlebar popover.background.magnifier button.titlebutton:active, .app-notification 
button.flat:active, .app-notification notebook > header > tabs > arrow:active, .app-notification 
button.sidebar-button:active, .app-notification headerbar button.titlebutton:active, headerbar 
.app-notification button.titlebutton:active,
-      .app-notification .titlebar button.titlebutton:active,
-      .titlebar .app-notification button.titlebutton:active, popover.background.touch-selection 
button.flat:checked, popover.background.touch-selection notebook > header > tabs > arrow:checked, 
popover.background.touch-selection button.sidebar-button:checked, popover.background.touch-selection 
headerbar button.titlebutton:checked, headerbar popover.background.touch-selection button.titlebutton:checked,
-      popover.background.touch-selection .titlebar button.titlebutton:checked,
-      .titlebar popover.background.touch-selection button.titlebutton:checked, popover.background.magnifier 
button.flat:checked, popover.background.magnifier notebook > header > tabs > arrow:checked, 
popover.background.magnifier button.sidebar-button:checked, popover.background.magnifier headerbar 
button.titlebutton:checked, headerbar popover.background.magnifier button.titlebutton:checked,
-      popover.background.magnifier .titlebar button.titlebutton:checked,
-      .titlebar popover.background.magnifier button.titlebutton:checked, .app-notification 
button.flat:checked, .app-notification notebook > header > tabs > arrow:checked, .app-notification 
button.sidebar-button:checked, .app-notification headerbar button.titlebutton:checked, headerbar 
.app-notification button.titlebutton:checked,
-      .app-notification .titlebar button.titlebutton:checked,
-      .titlebar .app-notification button.titlebutton:checked, .osd notebook > header > tabs > 
arrow.flat:active, .osd notebook > header > tabs > arrow.flat:checked, .osd
-      button.flat:active, .osd notebook > header > tabs > arrow:active, .osd
-      button.sidebar-button:active, .osd headerbar button.titlebutton:active, headerbar .osd 
button.titlebutton:active,
-      .osd .titlebar button.titlebutton:active,
-      .titlebar .osd button.titlebutton:active, .osd
-      button.flat:checked, .osd notebook > header > tabs > arrow:checked, .osd
-      button.sidebar-button:checked, .osd headerbar button.titlebutton:checked, headerbar .osd 
button.titlebutton:checked,
-      .osd .titlebar button.titlebutton:checked,
-      .titlebar .osd button.titlebutton:checked {
-        color: white;
-        border-color: rgba(0, 0, 0, 0.7);
-        background-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.7));
-        background-clip: padding-box;
-        box-shadow: none;
-        text-shadow: none;
-        -gtk-icon-shadow: none;
-        outline-color: rgba(238, 238, 236, 0.3); }
-  notebook > header > tabs > arrow.suggested-action,
-  button.suggested-action,
-  headerbar button.suggested-action.titlebutton,
-  .titlebar button.suggested-action.titlebutton {
+button.destructive-action {
+  color: white;
+  outline-color: rgba(255, 255, 255, 0.3);
+  border-color: #5e0707;
+  background-image: linear-gradient(to bottom, #cc0f0f, #c20f0f 60%, #b90e0e);
+  text-shadow: 0 -1px rgba(0, 0, 0, 0.64078);
+  -gtk-icon-shadow: 0 -1px rgba(0, 0, 0, 0.64078);
+  box-shadow: inset 0 1px rgba(255, 255, 255, 0.2), 0 1px rgba(238, 238, 236, 0); }
+  button.destructive-action.flat, notebook > header > tabs > arrow.destructive-action, 
button.destructive-action.sidebar-button, headerbar button.destructive-action.titlebutton,
+  .titlebar button.destructive-action.titlebutton {
+    border-color: transparent;
+    background-color: transparent;
+    background-image: none;
+    box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0);
+    text-shadow: none;
+    -gtk-icon-shadow: none;
+    color: #d51010; }
+  button.destructive-action:hover {
     color: white;
     outline-color: rgba(255, 255, 255, 0.3);
-    border-color: #0b1e33;
-    background-image: linear-gradient(to bottom, #1f5894, #1d538b 60%, #1b4e83);
-    text-shadow: 0 -1px rgba(0, 0, 0, 0.70353);
-    -gtk-icon-shadow: 0 -1px rgba(0, 0, 0, 0.70353);
-    box-shadow: inset 0 1px rgba(255, 255, 255, 0.05), 0 1px rgba(238, 238, 236, 0); }
-    notebook > header > tabs > arrow.suggested-action.flat,
-    button.suggested-action.flat,
-    notebook > header > tabs > arrow.suggested-action,
-    button.suggested-action.sidebar-button,
-    headerbar button.suggested-action.titlebutton,
-    .titlebar button.suggested-action.titlebutton {
-      border-color: transparent;
-      background-color: transparent;
-      background-image: none;
-      box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0);
-      text-shadow: none;
-      -gtk-icon-shadow: none;
-      color: #215d9c; }
-    notebook > header > tabs > arrow.suggested-action:hover,
-    button.suggested-action:hover {
-      color: white;
-      outline-color: rgba(255, 255, 255, 0.3);
-      border-color: #0b1e33;
-      /*
-      background-image: linear-gradient(to bottom,
-                                        lighten($c, 16%),
-                                        lighten($c, 6%) 40%,
-                                        lighten($c, 2%));
-      */
-      background-image: linear-gradient(to bottom, #2260a0, #1f5894 60%, #1d538b);
-      text-shadow: 0 -1px rgba(0, 0, 0, 0.65553);
-      -gtk-icon-shadow: 0 -1px rgba(0, 0, 0, 0.65553);
-      box-shadow: inset 0 1px rgba(255, 255, 255, 0.05), 0 1px rgba(238, 238, 236, 0); }
-    notebook > header > tabs > arrow.suggested-action:active, notebook > header > tabs > 
arrow.suggested-action:checked,
-    button.suggested-action:active,
-    button.suggested-action:checked {
-      color: white;
-      outline-color: rgba(255, 255, 255, 0.3);
-      border-color: #0b1e33;
-      background-image: linear-gradient(to bottom, #194776, #1c5187);
-      text-shadow: 0 -1px rgba(0, 0, 0, 0.78353);
-      -gtk-icon-shadow: 0 -1px rgba(0, 0, 0, 0.78353);
-      box-shadow: inset 0 2px 1px -2px rgba(0, 0, 0, 0.6), 0 1px rgba(238, 238, 236, 0); }
-    notebook > header > tabs > arrow.suggested-action:backdrop, notebook > header > tabs > 
arrow.suggested-action.flat:backdrop,
-    button.suggested-action:backdrop,
-    button.suggested-action.flat:backdrop,
-    notebook > header > tabs > arrow.suggested-action:backdrop,
-    button.suggested-action.sidebar-button:backdrop,
-    headerbar button.suggested-action.titlebutton:backdrop,
-    .titlebar button.suggested-action.titlebutton:backdrop {
-      color: #d3dfeb;
-      border-color: #0b1e33;
-      background-image: linear-gradient(to bottom, #215d9c);
-      text-shadow: none;
-      -gtk-icon-shadow: none;
+    border-color: #5e0707;
+    /*
+    background-image: linear-gradient(to bottom,
+                                      lighten($c, 16%),
+                                      lighten($c, 6%) 40%,
+                                      lighten($c, 2%));
+    */
+    background-image: linear-gradient(to bottom, #da1010, #cc0f0f 60%, #c20f0f);
+    text-shadow: 0 -1px rgba(0, 0, 0, 0.59278);
+    -gtk-icon-shadow: 0 -1px rgba(0, 0, 0, 0.59278);
+    box-shadow: inset 0 1px rgba(255, 255, 255, 0.2), 0 1px rgba(238, 238, 236, 0); }
+  button.destructive-action:active, button.destructive-action:checked {
+    color: white;
+    outline-color: rgba(255, 255, 255, 0.3);
+    border-color: #5e0707;
+    background-image: linear-gradient(to bottom, #aa0d0d, #bd0e0e);
+    text-shadow: 0 -1px rgba(0, 0, 0, 0.72078);
+    -gtk-icon-shadow: 0 -1px rgba(0, 0, 0, 0.72078);
+    box-shadow: inset 0 2px 1px -2px rgba(0, 0, 0, 0.6), 0 1px rgba(238, 238, 236, 0); }
+  button.destructive-action:backdrop, button.destructive-action.flat:backdrop, notebook > header > tabs > 
arrow.destructive-action:backdrop, button.destructive-action.sidebar-button:backdrop, headerbar 
button.destructive-action.titlebutton:backdrop,
+  .titlebar button.destructive-action.titlebutton:backdrop {
+    color: #f7cfcf;
+    border-color: #5e0707;
+    background-image: linear-gradient(to bottom, #d51010);
+    text-shadow: none;
+    -gtk-icon-shadow: none;
+    box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0); }
+    button.destructive-action:backdrop:active, button.destructive-action:backdrop:checked, 
button.destructive-action.flat:backdrop:active, notebook > header > tabs > 
arrow.destructive-action:backdrop:active, button.destructive-action.sidebar-button:backdrop:active, headerbar 
button.destructive-action.titlebutton:backdrop:active,
+    .titlebar button.destructive-action.titlebutton:backdrop:active, 
button.destructive-action.flat:backdrop:checked, notebook > header > tabs > 
arrow.destructive-action:backdrop:checked, button.destructive-action.sidebar-button:backdrop:checked, 
headerbar button.destructive-action.titlebutton:backdrop:checked,
+    .titlebar button.destructive-action.titlebutton:backdrop:checked {
+      color: #edcece;
+      border-color: #5e0707;
+      background-image: linear-gradient(to bottom, #a60c0c);
       box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0); }
-      notebook > header > tabs > arrow.suggested-action:backdrop:active, notebook > header > tabs > 
arrow.suggested-action:backdrop:checked, notebook > header > tabs > 
arrow.suggested-action.flat:backdrop:active, notebook > header > tabs > 
arrow.suggested-action.flat:backdrop:checked,
-      button.suggested-action:backdrop:active,
-      button.suggested-action:backdrop:checked,
-      button.suggested-action.flat:backdrop:active,
-      notebook > header > tabs > arrow.suggested-action:backdrop:active,
-      button.suggested-action.sidebar-button:backdrop:active,
-      headerbar button.suggested-action.titlebutton:backdrop:active,
-      .titlebar button.suggested-action.titlebutton:backdrop:active,
-      button.suggested-action.flat:backdrop:checked,
-      notebook > header > tabs > arrow.suggested-action:backdrop:checked,
-      button.suggested-action.sidebar-button:backdrop:checked,
-      headerbar button.suggested-action.titlebutton:backdrop:checked,
-      .titlebar button.suggested-action.titlebutton:backdrop:checked {
-        color: #d1dae3;
-        border-color: #0b1e33;
-        background-image: linear-gradient(to bottom, #184472);
-        box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0); }
-      notebook > header > tabs > arrow.suggested-action:backdrop:disabled, notebook > header > tabs > 
arrow.suggested-action.flat:backdrop:disabled,
-      button.suggested-action:backdrop:disabled,
-      button.suggested-action.flat:backdrop:disabled,
-      notebook > header > tabs > arrow.suggested-action:backdrop:disabled,
-      button.suggested-action.sidebar-button:backdrop:disabled,
-      headerbar button.suggested-action.titlebutton:backdrop:disabled,
-      .titlebar button.suggested-action.titlebutton:backdrop:disabled {
-        color: #5d6767;
-        border-color: #1f2222;
-        background-image: linear-gradient(to bottom, #333636);
-        text-shadow: none;
-        -gtk-icon-shadow: none;
-        box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0); }
-        notebook > header > tabs > arrow.suggested-action:backdrop:disabled:active, notebook > header > tabs

arrow.suggested-action:backdrop:disabled:checked, notebook > header > tabs >

arrow.suggested-action.flat:backdrop:disabled:active, notebook > header > tabs > 
arrow.suggested-action.flat:backdrop:disabled:checked,
-        button.suggested-action:backdrop:disabled:active,
-        button.suggested-action:backdrop:disabled:checked,
-        button.suggested-action.flat:backdrop:disabled:active,
-        notebook > header > tabs > arrow.suggested-action:backdrop:disabled:active,
-        button.suggested-action.sidebar-button:backdrop:disabled:active,
-        headerbar button.suggested-action.titlebutton:backdrop:disabled:active,
-        .titlebar button.suggested-action.titlebutton:backdrop:disabled:active,
-        button.suggested-action.flat:backdrop:disabled:checked,
-        notebook > header > tabs > arrow.suggested-action:backdrop:disabled:checked,
-        button.suggested-action.sidebar-button:backdrop:disabled:checked,
-        headerbar button.suggested-action.titlebutton:backdrop:disabled:checked,
-        .titlebar button.suggested-action.titlebutton:backdrop:disabled:checked {
-          color: #6c88a7;
-          border-color: #0b1e33;
-          background-image: linear-gradient(to bottom, #1d4877);
-          box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0); }
-    notebook > header > tabs > arrow.suggested-action.flat:backdrop, notebook > header > tabs > 
arrow.suggested-action.flat:disabled, notebook > header > tabs > 
arrow.suggested-action.flat:backdrop:disabled,
-    button.suggested-action.flat:backdrop,
-    notebook > header > tabs > arrow.suggested-action:backdrop,
-    button.suggested-action.sidebar-button:backdrop,
-    headerbar button.suggested-action.titlebutton:backdrop,
-    .titlebar button.suggested-action.titlebutton:backdrop,
-    button.suggested-action.flat:disabled,
-    notebook > header > tabs > arrow.suggested-action:disabled,
-    button.suggested-action.sidebar-button:disabled,
-    headerbar button.suggested-action.titlebutton:disabled,
-    .titlebar button.suggested-action.titlebutton:disabled,
-    button.suggested-action.flat:backdrop:disabled,
-    notebook > header > tabs > arrow.suggested-action:backdrop:disabled,
-    button.suggested-action.sidebar-button:backdrop:disabled,
-    headerbar button.suggested-action.titlebutton:backdrop:disabled,
-    .titlebar button.suggested-action.titlebutton:backdrop:disabled {
-      border-color: transparent;
-      background-color: transparent;
-      background-image: none;
-      box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0);
-      text-shadow: none;
-      -gtk-icon-shadow: none;
-      color: rgba(33, 93, 156, 0.8); }
-    notebook > header > tabs > arrow.suggested-action:disabled,
-    button.suggested-action:disabled {
-      color: #949796;
-      border-color: #1c1f1f;
+    button.destructive-action:backdrop:disabled, button.destructive-action.flat:backdrop:disabled, notebook

header > tabs > arrow.destructive-action:backdrop:disabled,

button.destructive-action.sidebar-button:backdrop:disabled, headerbar 
button.destructive-action.titlebutton:backdrop:disabled,
+    .titlebar button.destructive-action.titlebutton:backdrop:disabled {
+      color: #5d6767;
+      border-color: #1f2222;
       background-image: linear-gradient(to bottom, #333636);
       text-shadow: none;
       -gtk-icon-shadow: none;
       box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0); }
-      notebook > header > tabs > arrow.suggested-action:disabled:active, notebook > header > tabs > 
arrow.suggested-action:disabled:checked,
-      button.suggested-action:disabled:active,
-      button.suggested-action:disabled:checked {
-        color: #a5b6c9;
-        border-color: #0b1e33;
-        background-image: linear-gradient(to bottom, #1b4470, #1d4877);
+      button.destructive-action:backdrop:disabled:active, 
button.destructive-action:backdrop:disabled:checked, button.destructive-action.flat:backdrop:disabled:active, 
notebook > header > tabs > arrow.destructive-action:backdrop:disabled:active, 
button.destructive-action.sidebar-button:backdrop:disabled:active, headerbar 
button.destructive-action.titlebutton:backdrop:disabled:active,
+      .titlebar button.destructive-action.titlebutton:backdrop:disabled:active, 
button.destructive-action.flat:backdrop:disabled:checked, notebook > header > tabs > 
arrow.destructive-action:backdrop:disabled:checked, 
button.destructive-action.sidebar-button:backdrop:disabled:checked, headerbar 
button.destructive-action.titlebutton:backdrop:disabled:checked,
+      .titlebar button.destructive-action.titlebutton:backdrop:disabled:checked {
+        color: #c46565;
+        border-color: #5e0707;
+        background-image: linear-gradient(to bottom, #a41212);
         box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0); }
-    .osd notebook > header > tabs > arrow.suggested-action, .osd
-    button.suggested-action {
-      color: #eeeeec;
+  button.destructive-action.flat:backdrop, notebook > header > tabs > arrow.destructive-action:backdrop, 
button.destructive-action.sidebar-button:backdrop, headerbar button.destructive-action.titlebutton:backdrop,
+  .titlebar button.destructive-action.titlebutton:backdrop, button.destructive-action.flat:disabled, 
notebook > header > tabs > arrow.destructive-action:disabled, 
button.destructive-action.sidebar-button:disabled, headerbar button.destructive-action.titlebutton:disabled,
+  .titlebar button.destructive-action.titlebutton:disabled, 
button.destructive-action.flat:backdrop:disabled, notebook > header > tabs > 
arrow.destructive-action:backdrop:disabled, button.destructive-action.sidebar-button:backdrop:disabled, 
headerbar button.destructive-action.titlebutton:backdrop:disabled,
+  .titlebar button.destructive-action.titlebutton:backdrop:disabled {
+    border-color: transparent;
+    background-color: transparent;
+    background-image: none;
+    box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0);
+    text-shadow: none;
+    -gtk-icon-shadow: none;
+    color: rgba(213, 16, 16, 0.8); }
+  button.destructive-action:disabled {
+    color: #949796;
+    border-color: #1c1f1f;
+    background-image: linear-gradient(to bottom, #333636);
+    text-shadow: none;
+    -gtk-icon-shadow: none;
+    box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0); }
+    button.destructive-action:disabled:active, button.destructive-action:disabled:checked {
+      color: #dba0a0;
+      border-color: #5e0707;
+      background-image: linear-gradient(to bottom, #9d1111, #a41212);
+      box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0); }
+  .osd button.destructive-action {
+    color: #eeeeec;
+    border-color: rgba(0, 0, 0, 0.7);
+    background-image: linear-gradient(to bottom, rgba(213, 16, 16, 0.5));
+    background-clip: padding-box;
+    box-shadow: inset 0 1px rgba(255, 255, 255, 0.1);
+    text-shadow: 0 1px black;
+    -gtk-icon-shadow: 0 1px black;
+    outline-color: rgba(238, 238, 236, 0.3); }
+    .osd button.destructive-action:hover {
+      color: white;
       border-color: rgba(0, 0, 0, 0.7);
-      background-image: linear-gradient(to bottom, rgba(33, 93, 156, 0.5));
+      background-image: linear-gradient(to bottom, rgba(213, 16, 16, 0.7));
       background-clip: padding-box;
       box-shadow: inset 0 1px rgba(255, 255, 255, 0.1);
       text-shadow: 0 1px black;
       -gtk-icon-shadow: 0 1px black;
       outline-color: rgba(238, 238, 236, 0.3); }
-      .osd notebook > header > tabs > arrow.suggested-action:hover, .osd
-      button.suggested-action:hover {
-        color: white;
-        border-color: rgba(0, 0, 0, 0.7);
-        background-image: linear-gradient(to bottom, rgba(33, 93, 156, 0.7));
-        background-clip: padding-box;
-        box-shadow: inset 0 1px rgba(255, 255, 255, 0.1);
-        text-shadow: 0 1px black;
-        -gtk-icon-shadow: 0 1px black;
-        outline-color: rgba(238, 238, 236, 0.3); }
-      .osd notebook > header > tabs > arrow.suggested-action:active, .osd notebook > header > tabs > 
arrow.suggested-action:checked, .osd notebook > header > tabs > arrow.suggested-action:backdrop:active, .osd 
notebook > header > tabs > arrow.suggested-action:backdrop:checked, .osd
-      button.suggested-action:active, .osd
-      button.suggested-action:checked, .osd
-      button.suggested-action:backdrop:active, .osd
-      button.suggested-action:backdrop:checked {
-        color: white;
-        border-color: rgba(0, 0, 0, 0.7);
-        background-image: linear-gradient(to bottom, #215d9c);
-        background-clip: padding-box;
-        box-shadow: none;
-        text-shadow: none;
-        -gtk-icon-shadow: none;
-        outline-color: rgba(238, 238, 236, 0.3); }
-      .osd notebook > header > tabs > arrow.suggested-action:disabled, .osd notebook > header > tabs > 
arrow.suggested-action:backdrop:disabled, .osd
-      button.suggested-action:disabled, .osd
-      button.suggested-action:backdrop:disabled {
-        color: #878a89;
-        border-color: rgba(0, 0, 0, 0.7);
-        background-image: linear-gradient(to bottom, rgba(53, 57, 58, 0.5));
-        background-clip: padding-box;
-        box-shadow: none;
-        text-shadow: none;
-        -gtk-icon-shadow: none; }
-      .osd notebook > header > tabs > arrow.suggested-action:backdrop, .osd
-      button.suggested-action:backdrop {
-        color: #eeeeec;
-        border-color: rgba(0, 0, 0, 0.7);
-        background-image: linear-gradient(to bottom, rgba(33, 93, 156, 0.5));
-        background-clip: padding-box;
-        box-shadow: none;
-        text-shadow: none;
-        -gtk-icon-shadow: none; }
-  notebook > header > tabs > arrow.destructive-action,
-  button.destructive-action,
-  headerbar button.destructive-action.titlebutton,
-  .titlebar button.destructive-action.titlebutton {
-    color: white;
-    outline-color: rgba(255, 255, 255, 0.3);
-    border-color: #5e0707;
-    background-image: linear-gradient(to bottom, #cc0f0f, #c20f0f 60%, #b90e0e);
-    text-shadow: 0 -1px rgba(0, 0, 0, 0.64078);
-    -gtk-icon-shadow: 0 -1px rgba(0, 0, 0, 0.64078);
-    box-shadow: inset 0 1px rgba(255, 255, 255, 0.2), 0 1px rgba(238, 238, 236, 0); }
-    notebook > header > tabs > arrow.destructive-action.flat,
-    button.destructive-action.flat,
-    notebook > header > tabs > arrow.destructive-action,
-    button.destructive-action.sidebar-button,
-    headerbar button.destructive-action.titlebutton,
-    .titlebar button.destructive-action.titlebutton {
-      border-color: transparent;
-      background-color: transparent;
-      background-image: none;
-      box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0);
-      text-shadow: none;
-      -gtk-icon-shadow: none;
-      color: #d51010; }
-    notebook > header > tabs > arrow.destructive-action:hover,
-    button.destructive-action:hover {
-      color: white;
-      outline-color: rgba(255, 255, 255, 0.3);
-      border-color: #5e0707;
-      /*
-      background-image: linear-gradient(to bottom,
-                                        lighten($c, 16%),
-                                        lighten($c, 6%) 40%,
-                                        lighten($c, 2%));
-      */
-      background-image: linear-gradient(to bottom, #da1010, #cc0f0f 60%, #c20f0f);
-      text-shadow: 0 -1px rgba(0, 0, 0, 0.59278);
-      -gtk-icon-shadow: 0 -1px rgba(0, 0, 0, 0.59278);
-      box-shadow: inset 0 1px rgba(255, 255, 255, 0.2), 0 1px rgba(238, 238, 236, 0); }
-    notebook > header > tabs > arrow.destructive-action:active, notebook > header > tabs > 
arrow.destructive-action:checked,
-    button.destructive-action:active,
-    button.destructive-action:checked {
+    .osd button.destructive-action:active, .osd button.destructive-action:checked, .osd 
button.destructive-action:backdrop:active, .osd button.destructive-action:backdrop:checked {
       color: white;
-      outline-color: rgba(255, 255, 255, 0.3);
-      border-color: #5e0707;
-      background-image: linear-gradient(to bottom, #aa0d0d, #bd0e0e);
-      text-shadow: 0 -1px rgba(0, 0, 0, 0.72078);
-      -gtk-icon-shadow: 0 -1px rgba(0, 0, 0, 0.72078);
-      box-shadow: inset 0 2px 1px -2px rgba(0, 0, 0, 0.6), 0 1px rgba(238, 238, 236, 0); }
-    notebook > header > tabs > arrow.destructive-action:backdrop, notebook > header > tabs > 
arrow.destructive-action.flat:backdrop,
-    button.destructive-action:backdrop,
-    button.destructive-action.flat:backdrop,
-    notebook > header > tabs > arrow.destructive-action:backdrop,
-    button.destructive-action.sidebar-button:backdrop,
-    headerbar button.destructive-action.titlebutton:backdrop,
-    .titlebar button.destructive-action.titlebutton:backdrop {
-      color: #f7cfcf;
-      border-color: #5e0707;
+      border-color: rgba(0, 0, 0, 0.7);
       background-image: linear-gradient(to bottom, #d51010);
+      background-clip: padding-box;
+      box-shadow: none;
       text-shadow: none;
       -gtk-icon-shadow: none;
-      box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0); }
-      notebook > header > tabs > arrow.destructive-action:backdrop:active, notebook > header > tabs > 
arrow.destructive-action:backdrop:checked, notebook > header > tabs > 
arrow.destructive-action.flat:backdrop:active, notebook > header > tabs > 
arrow.destructive-action.flat:backdrop:checked,
-      button.destructive-action:backdrop:active,
-      button.destructive-action:backdrop:checked,
-      button.destructive-action.flat:backdrop:active,
-      notebook > header > tabs > arrow.destructive-action:backdrop:active,
-      button.destructive-action.sidebar-button:backdrop:active,
-      headerbar button.destructive-action.titlebutton:backdrop:active,
-      .titlebar button.destructive-action.titlebutton:backdrop:active,
-      button.destructive-action.flat:backdrop:checked,
-      notebook > header > tabs > arrow.destructive-action:backdrop:checked,
-      button.destructive-action.sidebar-button:backdrop:checked,
-      headerbar button.destructive-action.titlebutton:backdrop:checked,
-      .titlebar button.destructive-action.titlebutton:backdrop:checked {
-        color: #edcece;
-        border-color: #5e0707;
-        background-image: linear-gradient(to bottom, #a60c0c);
-        box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0); }
-      notebook > header > tabs > arrow.destructive-action:backdrop:disabled, notebook > header > tabs > 
arrow.destructive-action.flat:backdrop:disabled,
-      button.destructive-action:backdrop:disabled,
-      button.destructive-action.flat:backdrop:disabled,
-      notebook > header > tabs > arrow.destructive-action:backdrop:disabled,
-      button.destructive-action.sidebar-button:backdrop:disabled,
-      headerbar button.destructive-action.titlebutton:backdrop:disabled,
-      .titlebar button.destructive-action.titlebutton:backdrop:disabled {
-        color: #5d6767;
-        border-color: #1f2222;
-        background-image: linear-gradient(to bottom, #333636);
-        text-shadow: none;
-        -gtk-icon-shadow: none;
-        box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0); }
-        notebook > header > tabs > arrow.destructive-action:backdrop:disabled:active, notebook > header > 
tabs > arrow.destructive-action:backdrop:disabled:checked, notebook > header > tabs > 
arrow.destructive-action.flat:backdrop:disabled:active, notebook > header > tabs > 
arrow.destructive-action.flat:backdrop:disabled:checked,
-        button.destructive-action:backdrop:disabled:active,
-        button.destructive-action:backdrop:disabled:checked,
-        button.destructive-action.flat:backdrop:disabled:active,
-        notebook > header > tabs > arrow.destructive-action:backdrop:disabled:active,
-        button.destructive-action.sidebar-button:backdrop:disabled:active,
-        headerbar button.destructive-action.titlebutton:backdrop:disabled:active,
-        .titlebar button.destructive-action.titlebutton:backdrop:disabled:active,
-        button.destructive-action.flat:backdrop:disabled:checked,
-        notebook > header > tabs > arrow.destructive-action:backdrop:disabled:checked,
-        button.destructive-action.sidebar-button:backdrop:disabled:checked,
-        headerbar button.destructive-action.titlebutton:backdrop:disabled:checked,
-        .titlebar button.destructive-action.titlebutton:backdrop:disabled:checked {
-          color: #c46565;
-          border-color: #5e0707;
-          background-image: linear-gradient(to bottom, #a41212);
-          box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0); }
-    notebook > header > tabs > arrow.destructive-action.flat:backdrop, notebook > header > tabs > 
arrow.destructive-action.flat:disabled, notebook > header > tabs > 
arrow.destructive-action.flat:backdrop:disabled,
-    button.destructive-action.flat:backdrop,
-    notebook > header > tabs > arrow.destructive-action:backdrop,
-    button.destructive-action.sidebar-button:backdrop,
-    headerbar button.destructive-action.titlebutton:backdrop,
-    .titlebar button.destructive-action.titlebutton:backdrop,
-    button.destructive-action.flat:disabled,
-    notebook > header > tabs > arrow.destructive-action:disabled,
-    button.destructive-action.sidebar-button:disabled,
-    headerbar button.destructive-action.titlebutton:disabled,
-    .titlebar button.destructive-action.titlebutton:disabled,
-    button.destructive-action.flat:backdrop:disabled,
-    notebook > header > tabs > arrow.destructive-action:backdrop:disabled,
-    button.destructive-action.sidebar-button:backdrop:disabled,
-    headerbar button.destructive-action.titlebutton:backdrop:disabled,
-    .titlebar button.destructive-action.titlebutton:backdrop:disabled {
-      border-color: transparent;
-      background-color: transparent;
-      background-image: none;
-      box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0);
-      text-shadow: none;
-      -gtk-icon-shadow: none;
-      color: rgba(213, 16, 16, 0.8); }
-    notebook > header > tabs > arrow.destructive-action:disabled,
-    button.destructive-action:disabled {
-      color: #949796;
-      border-color: #1c1f1f;
-      background-image: linear-gradient(to bottom, #333636);
+      outline-color: rgba(238, 238, 236, 0.3); }
+    .osd button.destructive-action:disabled, .osd button.destructive-action:backdrop:disabled {
+      color: #878a89;
+      border-color: rgba(0, 0, 0, 0.7);
+      background-image: linear-gradient(to bottom, rgba(53, 57, 58, 0.5));
+      background-clip: padding-box;
+      box-shadow: none;
       text-shadow: none;
-      -gtk-icon-shadow: none;
-      box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0); }
-      notebook > header > tabs > arrow.destructive-action:disabled:active, notebook > header > tabs > 
arrow.destructive-action:disabled:checked,
-      button.destructive-action:disabled:active,
-      button.destructive-action:disabled:checked {
-        color: #dba0a0;
-        border-color: #5e0707;
-        background-image: linear-gradient(to bottom, #9d1111, #a41212);
-        box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0); }
-    .osd notebook > header > tabs > arrow.destructive-action, .osd
-    button.destructive-action {
+      -gtk-icon-shadow: none; }
+    .osd button.destructive-action:backdrop {
       color: #eeeeec;
       border-color: rgba(0, 0, 0, 0.7);
       background-image: linear-gradient(to bottom, rgba(213, 16, 16, 0.5));
       background-clip: padding-box;
-      box-shadow: inset 0 1px rgba(255, 255, 255, 0.1);
-      text-shadow: 0 1px black;
-      -gtk-icon-shadow: 0 1px black;
-      outline-color: rgba(238, 238, 236, 0.3); }
-      .osd notebook > header > tabs > arrow.destructive-action:hover, .osd
-      button.destructive-action:hover {
-        color: white;
-        border-color: rgba(0, 0, 0, 0.7);
-        background-image: linear-gradient(to bottom, rgba(213, 16, 16, 0.7));
-        background-clip: padding-box;
-        box-shadow: inset 0 1px rgba(255, 255, 255, 0.1);
-        text-shadow: 0 1px black;
-        -gtk-icon-shadow: 0 1px black;
-        outline-color: rgba(238, 238, 236, 0.3); }
-      .osd notebook > header > tabs > arrow.destructive-action:active, .osd notebook > header > tabs > 
arrow.destructive-action:checked, .osd notebook > header > tabs > arrow.destructive-action:backdrop:active, 
.osd notebook > header > tabs > arrow.destructive-action:backdrop:checked, .osd
-      button.destructive-action:active, .osd
-      button.destructive-action:checked, .osd
-      button.destructive-action:backdrop:active, .osd
-      button.destructive-action:backdrop:checked {
-        color: white;
-        border-color: rgba(0, 0, 0, 0.7);
-        background-image: linear-gradient(to bottom, #d51010);
-        background-clip: padding-box;
-        box-shadow: none;
-        text-shadow: none;
-        -gtk-icon-shadow: none;
-        outline-color: rgba(238, 238, 236, 0.3); }
-      .osd notebook > header > tabs > arrow.destructive-action:disabled, .osd notebook > header > tabs > 
arrow.destructive-action:backdrop:disabled, .osd
-      button.destructive-action:disabled, .osd
-      button.destructive-action:backdrop:disabled {
-        color: #878a89;
-        border-color: rgba(0, 0, 0, 0.7);
-        background-image: linear-gradient(to bottom, rgba(53, 57, 58, 0.5));
-        background-clip: padding-box;
-        box-shadow: none;
-        text-shadow: none;
-        -gtk-icon-shadow: none; }
-      .osd notebook > header > tabs > arrow.destructive-action:backdrop, .osd
-      button.destructive-action:backdrop {
-        color: #eeeeec;
-        border-color: rgba(0, 0, 0, 0.7);
-        background-image: linear-gradient(to bottom, rgba(213, 16, 16, 0.5));
-        background-clip: padding-box;
-        box-shadow: none;
-        text-shadow: none;
-        -gtk-icon-shadow: none; }
-  notebook > header > tabs > arrow.text-button,
-  button.text-button,
-  headerbar button.text-button.titlebutton,
-  .titlebar button.text-button.titlebutton {
-    padding-left: 16px;
-    padding-right: 16px; }
-  notebook > header > tabs > arrow.text-button.image-button label:first-child,
-  button.text-button.image-button label:first-child {
-    padding-left: 8px; }
-  notebook > header > tabs > arrow.text-button.image-button label:last-child,
-  button.text-button.image-button label:last-child {
-    padding-right: 8px; }
-  notebook > header > tabs.stack-switcher > arrow, .stack-switcher >
-  button, headerbar .stack-switcher > button.titlebutton,
-  .titlebar .stack-switcher > button.titlebutton {
-    outline-offset: -3px; }
-    notebook > header > tabs.stack-switcher > arrow > label, .stack-switcher >
-    button > label,
-    .titlebar .stack-switcher > button.titlebutton > label {
-      padding-left: 6px;
-      padding-right: 6px; }
-    notebook > header > tabs.stack-switcher > arrow > image, .stack-switcher >
-    button > image,
-    .titlebar .stack-switcher > button.titlebutton > image {
-      padding-left: 6px;
-      padding-right: 6px;
-      padding-top: 3px;
-      padding-bottom: 3px; }
-    notebook > header > tabs.stack-switcher > arrow.text-button, .stack-switcher >
-    button.text-button, headerbar .stack-switcher > button.text-button.titlebutton,
-    .titlebar .stack-switcher > button.text-button.titlebutton {
-      padding-left: 10px;
-      padding-right: 10px; }
-    notebook > header > tabs.stack-switcher > arrow.image-button, .stack-switcher >
-    button.image-button, headerbar .stack-switcher > button.image-button.titlebutton,
-    .titlebar .stack-switcher > button.image-button.titlebutton {
-      padding-left: 2px;
-      padding-right: 2px; }
-    notebook > header > tabs.stack-switcher > arrow.needs-attention:active > label, notebook > header > 
tabs.stack-switcher > arrow.needs-attention:active > image, notebook > header > tabs.stack-switcher > 
arrow.needs-attention:checked > label, notebook > header > tabs.stack-switcher > 
arrow.needs-attention:checked > image, .stack-switcher >
-    button.needs-attention:active > label, .stack-switcher >
-    button.needs-attention:active > image, .stack-switcher >
-    button.needs-attention:checked > label, .stack-switcher >
-    button.needs-attention:checked > image {
-      animation: none;
-      background-image: none; }
-  .inline-toolbar notebook > header > tabs > arrow, .inline-toolbar notebook > header > tabs > 
arrow:backdrop, .inline-toolbar
-  button, .inline-toolbar headerbar button.titlebutton, headerbar .inline-toolbar button.titlebutton,
-  .inline-toolbar .titlebar button.titlebutton,
-  .titlebar .inline-toolbar button.titlebutton, .inline-toolbar
-  button:backdrop {
-    border-radius: 2px;
-    border-width: 1px; }
-  .primary-toolbar notebook > header > tabs > arrow, .primary-toolbar
-  button, .primary-toolbar headerbar button.titlebutton, headerbar .primary-toolbar button.titlebutton,
-  .primary-toolbar .titlebar button.titlebutton,
-  .titlebar .primary-toolbar button.titlebutton {
-    -gtk-icon-shadow: none; }
+      box-shadow: none;
+      text-shadow: none;
+      -gtk-icon-shadow: none; }
+.stack-switcher > button {
+  outline-offset: -3px; }
+  .stack-switcher > button > label {
+    padding-left: 6px;
+    padding-right: 6px; }
+  .stack-switcher > button > image {
+    padding-left: 6px;
+    padding-right: 6px;
+    padding-top: 3px;
+    padding-bottom: 3px; }
+  .stack-switcher > button.text-button {
+    padding-left: 10px;
+    padding-right: 10px; }
+  .stack-switcher > button.image-button {
+    padding-left: 2px;
+    padding-right: 2px; }
+  .stack-switcher > button.needs-attention:active > label, .stack-switcher > button.needs-attention:active > 
image, .stack-switcher > button.needs-attention:checked > label, .stack-switcher > 
button.needs-attention:checked > image {
+    animation: none;
+    background-image: none; }
+.inline-toolbar button, .inline-toolbar button:backdrop {
+  border-radius: 2px;
+  border-width: 1px; }
+.primary-toolbar button {
+  -gtk-icon-shadow: none; }
 
-notebook > header > tabs.stack-switcher > arrow.needs-attention > label, notebook > header > 
tabs.stack-switcher > arrow.needs-attention > image, .stack-switcher >
-button.needs-attention > label, .stack-switcher >
-button.needs-attention > image, stacksidebar row.needs-attention > label {
+.stack-switcher > button.needs-attention > label, .stack-switcher > button.needs-attention > image, 
stacksidebar row.needs-attention > label {
   animation: needs_attention 150ms ease-in;
   background-image: -gtk-gradient(radial, center center, 0, center center, 0.5, to(#3583d5), 
to(transparent)), -gtk-gradient(radial, center center, 0, center center, 0.45, to(rgba(0, 0, 0, 0.81176)), 
to(transparent));
   background-size: 6px 6px, 6px 6px;
   background-repeat: no-repeat;
   background-position: right 3px, right 2px; }
-  notebook > header > tabs.stack-switcher > arrow.needs-attention > label:backdrop, notebook > header > 
tabs.stack-switcher > arrow.needs-attention > image:backdrop, .stack-switcher >
-  button.needs-attention > label:backdrop, .stack-switcher >
-  button.needs-attention > image:backdrop, stacksidebar row.needs-attention > label:backdrop {
+  .stack-switcher > button.needs-attention > label:backdrop, .stack-switcher > button.needs-attention > 
image:backdrop, stacksidebar row.needs-attention > label:backdrop {
     background-size: 6px 6px, 0 0; }
-  notebook > header > tabs.stack-switcher > arrow.needs-attention > label:dir(rtl), notebook > header > 
tabs.stack-switcher > arrow.needs-attention > image:dir(rtl), .stack-switcher >
-  button.needs-attention > label:dir(rtl), .stack-switcher >
-  button.needs-attention > image:dir(rtl), stacksidebar row.needs-attention > label:dir(rtl) {
+  .stack-switcher > button.needs-attention > label:dir(rtl), .stack-switcher > button.needs-attention > 
image:dir(rtl), stacksidebar row.needs-attention > label:dir(rtl) {
     background-position: left 3px, left 2px; }
 
-.inline-toolbar toolbutton > button, .inline-toolbar headerbar toolbutton > button.titlebutton,
-.inline-toolbar .titlebar toolbutton > button.titlebutton,
-.titlebar .inline-toolbar toolbutton > button.titlebutton {
+.inline-toolbar toolbutton > button {
   color: #eeeeec;
   outline-color: rgba(238, 238, 236, 0.3);
   border-color: #1c1f1f;
@@ -1240,8 +1010,7 @@ button.needs-attention > image, stacksidebar row.needs-attention > label {
   text-shadow: 0 -1px rgba(0, 0, 0, 0.81176);
   -gtk-icon-shadow: 0 -1px rgba(0, 0, 0, 0.81176);
   box-shadow: inset 0 1px rgba(255, 255, 255, 0.05), 0 1px rgba(238, 238, 236, 0); }
-  .inline-toolbar toolbutton > button:hover, .inline-toolbar headerbar toolbutton > button.titlebutton:hover,
-  .inline-toolbar .titlebar toolbutton > button.titlebutton:hover {
+  .inline-toolbar toolbutton > button:hover {
     color: #eeeeec;
     outline-color: rgba(238, 238, 236, 0.3);
     border-color: #1c1f1f;
@@ -1255,9 +1024,7 @@ button.needs-attention > image, stacksidebar row.needs-attention > label {
     text-shadow: 0 -1px rgba(0, 0, 0, 0.76376);
     -gtk-icon-shadow: 0 -1px rgba(0, 0, 0, 0.76376);
     box-shadow: inset 0 1px rgba(255, 255, 255, 0.05), 0 1px rgba(238, 238, 236, 0); }
-  .inline-toolbar toolbutton > button:active, .inline-toolbar headerbar toolbutton > 
button.titlebutton:active,
-  .inline-toolbar .titlebar toolbutton > button.titlebutton:active, .inline-toolbar toolbutton > 
button:checked, .inline-toolbar headerbar toolbutton > button.titlebutton:checked,
-  .inline-toolbar .titlebar toolbutton > button.titlebutton:checked {
+  .inline-toolbar toolbutton > button:active, .inline-toolbar toolbutton > button:checked {
     color: #eeeeec;
     outline-color: rgba(238, 238, 236, 0.3);
     border-color: #1c1f1f;
@@ -1265,47 +1032,38 @@ button.needs-attention > image, stacksidebar row.needs-attention > label {
     text-shadow: 0 -1px rgba(0, 0, 0, 0.89176);
     -gtk-icon-shadow: 0 -1px rgba(0, 0, 0, 0.89176);
     box-shadow: inset 0 2px 1px -2px rgba(0, 0, 0, 0.6), 0 1px rgba(238, 238, 236, 0); }
-  .inline-toolbar toolbutton > button:disabled, .inline-toolbar headerbar toolbutton > 
button.titlebutton:disabled,
-  .inline-toolbar .titlebar toolbutton > button.titlebutton:disabled {
+  .inline-toolbar toolbutton > button:disabled {
     color: #949796;
     border-color: #1c1f1f;
     background-image: linear-gradient(to bottom, #333636);
     text-shadow: none;
     -gtk-icon-shadow: none;
     box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0); }
-  .inline-toolbar toolbutton > button:disabled:active, .inline-toolbar headerbar toolbutton > 
button.titlebutton:disabled:active,
-  .inline-toolbar .titlebar toolbutton > button.titlebutton:disabled:active, .inline-toolbar toolbutton > 
button:disabled:checked, .inline-toolbar headerbar toolbutton > button.titlebutton:disabled:checked,
-  .inline-toolbar .titlebar toolbutton > button.titlebutton:disabled:checked {
+  .inline-toolbar toolbutton > button:disabled:active, .inline-toolbar toolbutton > button:disabled:checked {
     color: #949796;
     border-color: #1c1f1f;
     background-image: linear-gradient(to bottom, #313434, #333636);
     box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0); }
-  .inline-toolbar toolbutton > button:backdrop, .inline-toolbar headerbar toolbutton > 
button.titlebutton:backdrop,
-  .inline-toolbar .titlebar toolbutton > button.titlebutton:backdrop {
+  .inline-toolbar toolbutton > button:backdrop {
     color: #949796;
     border-color: #1f2222;
     background-image: linear-gradient(to bottom, #393f3f);
     text-shadow: none;
     -gtk-icon-shadow: none;
     box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0); }
-  .inline-toolbar toolbutton > button:backdrop:active, .inline-toolbar headerbar toolbutton > 
button.titlebutton:backdrop:active,
-  .inline-toolbar .titlebar toolbutton > button.titlebutton:backdrop:active, .inline-toolbar toolbutton > 
button:backdrop:checked, .inline-toolbar headerbar toolbutton > button.titlebutton:backdrop:checked,
-  .inline-toolbar .titlebar toolbutton > button.titlebutton:backdrop:checked {
+  .inline-toolbar toolbutton > button:backdrop:active, .inline-toolbar toolbutton > button:backdrop:checked {
     color: #949796;
     border-color: #1f2222;
     background-image: linear-gradient(to bottom, #303535);
     box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0); }
-  .inline-toolbar toolbutton > button:backdrop:disabled, .inline-toolbar headerbar toolbutton > 
button.titlebutton:backdrop:disabled,
-  .inline-toolbar .titlebar toolbutton > button.titlebutton:backdrop:disabled {
+  .inline-toolbar toolbutton > button:backdrop:disabled {
     color: #5d6767;
     border-color: #1f2222;
     background-image: linear-gradient(to bottom, #333636);
     text-shadow: none;
     -gtk-icon-shadow: none;
     box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(238, 238, 236, 0); }
-  .inline-toolbar toolbutton > button:backdrop:disabled:active, .inline-toolbar headerbar toolbutton > 
button.titlebutton:backdrop:disabled:active,
-  .inline-toolbar .titlebar toolbutton > button.titlebutton:backdrop:disabled:active, .inline-toolbar 
toolbutton > button:backdrop:disabled:checked, .inline-toolbar headerbar toolbutton > 
button.titlebutton:backdrop:disabled:checked,
-  .inline-toolbar .titlebar toolbutton > button.titlebutton:backdrop:disabled:checked {
+  .inline-toolbar toolbutton > button:backdrop:disabled:active, .inline-toolbar toolbutton > 
button:backdrop:disabled:checked {
     color: #5d6767;
     border-color: #1f2222;
     background-image: linear-gradient(to bottom, #272929);
@@ -1314,6 +1072,8 @@ button.needs-attention > image, stacksidebar row.needs-attention > label {
 toolbar.inline-toolbar toolbutton > button.flat, .inline-toolbar toolbutton > button.flat, 
searchbar.inline-toolbar toolbutton > button.flat,
 .inline-toolbar.location-bar toolbutton > button.flat, toolbar.inline-toolbar toolbutton > 
button.sidebar-button, .inline-toolbar toolbutton > button.sidebar-button, searchbar.inline-toolbar 
toolbutton > button.sidebar-button,
 .inline-toolbar.location-bar toolbutton > button.sidebar-button, .inline-toolbar headerbar toolbutton > 
button.titlebutton, headerbar .inline-toolbar toolbutton > button.titlebutton,
+.inline-toolbar .titlebar toolbutton > button.titlebutton,
+.titlebar .inline-toolbar toolbutton > button.titlebutton,
 toolbar.inline-toolbar toolbutton:backdrop > button.flat,
 .inline-toolbar toolbutton:backdrop > button.flat,
 searchbar.inline-toolbar toolbutton:backdrop > button.flat,
@@ -1325,24 +1085,11 @@ searchbar.inline-toolbar toolbutton:backdrop > button.sidebar-button,
 .inline-toolbar headerbar toolbutton:backdrop > button.titlebutton,
 headerbar .inline-toolbar toolbutton:backdrop > button.titlebutton,
 .inline-toolbar .titlebar toolbutton:backdrop > button.titlebutton,
-.titlebar .inline-toolbar toolbutton:backdrop > button.titlebutton, .linked:not(.vertical) > entry, 
.linked:not(.vertical) > spinbutton:not(.vertical), .inline-toolbar notebook > header > tabs > arrow, 
.inline-toolbar notebook > header > tabs > arrow:backdrop, .inline-toolbar
-button, .inline-toolbar headerbar button.titlebutton, headerbar .inline-toolbar button.titlebutton,
-.inline-toolbar .titlebar button.titlebutton,
-.titlebar .inline-toolbar button.titlebutton, .inline-toolbar
-button:backdrop, notebook > header > tabs.linked > arrow, notebook > header > tabs.linked > arrow:hover, 
notebook > header > tabs.linked > arrow:active, notebook > header > tabs.linked > arrow:checked, notebook > 
header > tabs.linked > arrow:backdrop, .linked >
-button, headerbar .linked > button.titlebutton,
-.titlebar .linked > button.titlebutton, .linked >
-button:hover, .linked >
-button:active, .linked >
-button:checked, .linked >
-button:backdrop, .linked > combobox > button.combo:dir(ltr), .linked > combobox > button.combo:dir(rtl) {
+.titlebar .inline-toolbar toolbutton:backdrop > button.titlebutton, .linked:not(.vertical) > entry, 
.linked:not(.vertical) > spinbutton:not(.vertical), .inline-toolbar button, .inline-toolbar button:backdrop, 
.linked > button, .linked > button:hover, .linked > button:active, .linked > button:checked, .linked > 
button:backdrop, .linked > combobox > button.combo:dir(ltr), .linked > combobox > button.combo:dir(rtl) {
   border-radius: 0;
   border-right-style: none; }
 
-.linked:not(.vertical) > entry:first-child, .linked:not(.vertical) > spinbutton:first-child:not(.vertical), 
.inline-toolbar notebook > header > tabs > arrow:first-child, .inline-toolbar notebook > header > tabs > 
arrow:first-child:backdrop, .inline-toolbar
-button:first-child, notebook > header > tabs.linked > arrow:first-child, notebook > header > tabs.linked > 
arrow:first-child:hover, notebook > header > tabs.linked > arrow:first-child:active, notebook > header > 
tabs.linked > arrow:first-child:checked, notebook > header > tabs.linked > arrow:first-child:backdrop, 
.linked >
-button:first-child, headerbar .linked > button.titlebutton:first-child,
-.titlebar .linked > button.titlebutton:first-child, toolbar.inline-toolbar toolbutton:first-child > 
button.flat, .inline-toolbar toolbutton:first-child > button.flat, searchbar.inline-toolbar 
toolbutton:first-child > button.flat,
+.linked:not(.vertical) > entry:first-child, .linked:not(.vertical) > spinbutton:first-child:not(.vertical), 
.inline-toolbar button:first-child, .linked > button:first-child, toolbar.inline-toolbar 
toolbutton:first-child > button.flat, .inline-toolbar toolbutton:first-child > button.flat, 
searchbar.inline-toolbar toolbutton:first-child > button.flat,
 .inline-toolbar.location-bar toolbutton:first-child > button.flat, toolbar.inline-toolbar 
toolbutton:first-child > button.sidebar-button, .inline-toolbar toolbutton:first-child > 
button.sidebar-button, searchbar.inline-toolbar toolbutton:first-child > button.sidebar-button,
 .inline-toolbar.location-bar toolbutton:first-child > button.sidebar-button, .inline-toolbar headerbar 
toolbutton:first-child > button.titlebutton, headerbar .inline-toolbar toolbutton:first-child > 
button.titlebutton,
 .inline-toolbar .titlebar toolbutton:first-child > button.titlebutton,
@@ -1361,10 +1108,7 @@ headerbar .inline-toolbar toolbutton:backdrop:first-child > button.titlebutton,
 .titlebar .inline-toolbar toolbutton:backdrop:first-child > button.titlebutton, combobox.linked 
button:nth-child(2):dir(rtl), .linked:not(.vertical) > combobox:first-child > button.combo {
   border-top-left-radius: 3px;
   border-bottom-left-radius: 3px; }
-.linked:not(.vertical) > entry:last-child, .linked:not(.vertical) > spinbutton:last-child:not(.vertical), 
.inline-toolbar notebook > header > tabs > arrow:last-child, .inline-toolbar notebook > header > tabs > 
arrow:last-child:backdrop, .inline-toolbar
-button:last-child, notebook > header > tabs.linked > arrow:last-child, notebook > header > tabs.linked > 
arrow:last-child:hover, notebook > header > tabs.linked > arrow:last-child:active, notebook > header > 
tabs.linked > arrow:last-child:checked, notebook > header > tabs.linked > arrow:last-child:backdrop, .linked >
-button:last-child, headerbar .linked > button.titlebutton:last-child,
-.titlebar .linked > button.titlebutton:last-child, toolbar.inline-toolbar toolbutton:last-child > 
button.flat, .inline-toolbar toolbutton:last-child > button.flat, searchbar.inline-toolbar 
toolbutton:last-child > button.flat,
+.linked:not(.vertical) > entry:last-child, .linked:not(.vertical) > spinbutton:last-child:not(.vertical), 
.inline-toolbar button:last-child, .linked > button:last-child, toolbar.inline-toolbar toolbutton:last-child

button.flat, .inline-toolbar toolbutton:last-child > button.flat, searchbar.inline-toolbar

toolbutton:last-child > button.flat,
 .inline-toolbar.location-bar toolbutton:last-child > button.flat, toolbar.inline-toolbar 
toolbutton:last-child > button.sidebar-button, .inline-toolbar toolbutton:last-child > button.sidebar-button, 
searchbar.inline-toolbar toolbutton:last-child > button.sidebar-button,
 .inline-toolbar.location-bar toolbutton:last-child > button.sidebar-button, .inline-toolbar headerbar 
toolbutton:last-child > button.titlebutton, headerbar .inline-toolbar toolbutton:last-child > 
button.titlebutton,
 .inline-toolbar .titlebar toolbutton:last-child > button.titlebutton,
@@ -1384,10 +1128,7 @@ headerbar .inline-toolbar toolbutton:backdrop:last-child > button.titlebutton,
   border-top-right-radius: 3px;
   border-bottom-right-radius: 3px;
   border-right-style: solid; }
-.linked:not(.vertical) > entry:only-child, .linked:not(.vertical) > spinbutton:only-child:not(.vertical), 
.inline-toolbar notebook > header > tabs > arrow:only-child, .inline-toolbar notebook > header > tabs > 
arrow:only-child:backdrop, .inline-toolbar
-button:only-child, notebook > header > tabs.linked > arrow:only-child, notebook > header > tabs.linked > 
arrow:only-child:hover, notebook > header > tabs.linked > arrow:only-child:active, notebook > header > 
tabs.linked > arrow:only-child:checked, notebook > header > tabs.linked > arrow:only-child:backdrop, .linked >
-button:only-child, headerbar .linked > button.titlebutton:only-child,
-.titlebar .linked > button.titlebutton:only-child, toolbar.inline-toolbar toolbutton:only-child > 
button.flat, .inline-toolbar toolbutton:only-child > button.flat, searchbar.inline-toolbar 
toolbutton:only-child > button.flat,
+.linked:not(.vertical) > entry:only-child, .linked:not(.vertical) > spinbutton:only-child:not(.vertical), 
.inline-toolbar button:only-child, .linked > button:only-child, toolbar.inline-toolbar toolbutton:only-child

button.flat, .inline-toolbar toolbutton:only-child > button.flat, searchbar.inline-toolbar

toolbutton:only-child > button.flat,
 .inline-toolbar.location-bar toolbutton:only-child > button.flat, toolbar.inline-toolbar 
toolbutton:only-child > button.sidebar-button, .inline-toolbar toolbutton:only-child > button.sidebar-button, 
searchbar.inline-toolbar toolbutton:only-child > button.sidebar-button,
 .inline-toolbar.location-bar toolbutton:only-child > button.sidebar-button, .inline-toolbar headerbar 
toolbutton:only-child > button.titlebutton, headerbar .inline-toolbar toolbutton:only-child > 
button.titlebutton,
 .inline-toolbar .titlebar toolbutton:only-child > button.titlebutton,
@@ -1407,41 +1148,26 @@ headerbar .inline-toolbar toolbutton:backdrop:only-child > button.titlebutton,
   border-radius: 3px;
   border-style: solid; }
 
-.linked.vertical > entry, .linked.vertical > spinbutton:not(.vertical), notebook > header > 
tabs.linked.vertical > arrow, notebook > header > tabs.linked.vertical > arrow:hover, notebook > header > 
tabs.linked.vertical > arrow:active, notebook > header > tabs.linked.vertical > arrow:checked, notebook > 
header > tabs.linked.vertical > arrow:backdrop, .linked.vertical >
-button, headerbar .linked.vertical > button.titlebutton,
-.titlebar .linked.vertical > button.titlebutton, .linked.vertical >
-button:hover, .linked.vertical >
-button:active, .linked.vertical >
-button:checked, .linked.vertical >
-button:backdrop, .linked.vertical > combobox > button.combo {
+.linked.vertical > entry, .linked.vertical > spinbutton:not(.vertical), .linked.vertical > button, 
.linked.vertical > button:hover, .linked.vertical > button:active, .linked.vertical > button:checked, 
.linked.vertical > button:backdrop, .linked.vertical > combobox > button.combo {
   border-style: solid solid none solid;
   border-radius: 0; }
 
-.linked.vertical > entry:first-child, .linked.vertical > spinbutton:first-child:not(.vertical), notebook > 
header > tabs.linked.vertical > arrow:first-child, notebook > header > tabs.linked.vertical > 
arrow:first-child:hover, notebook > header > tabs.linked.vertical > arrow:first-child:active, notebook > 
header > tabs.linked.vertical > arrow:first-child:checked, notebook > header > tabs.linked.vertical > 
arrow:first-child:backdrop, .linked.vertical >
-button:first-child, headerbar .linked.vertical > button.titlebutton:first-child,
-.titlebar .linked.vertical > button.titlebutton:first-child, .linked.vertical > combobox:first-child > 
button.combo {
+.linked.vertical > entry:first-child, .linked.vertical > spinbutton:first-child:not(.vertical), 
.linked.vertical > button:first-child, .linked.vertical > combobox:first-child > button.combo {
   border-top-left-radius: 3px;
   border-top-right-radius: 3px; }
-.linked.vertical > entry:last-child, .linked.vertical > spinbutton:last-child:not(.vertical), notebook > 
header > tabs.linked.vertical > arrow:last-child, notebook > header > tabs.linked.vertical > 
arrow:last-child:hover, notebook > header > tabs.linked.vertical > arrow:last-child:active, notebook > header

tabs.linked.vertical > arrow:last-child:checked, notebook > header > tabs.linked.vertical >

arrow:last-child:backdrop, .linked.vertical >
-button:last-child, headerbar .linked.vertical > button.titlebutton:last-child,
-.titlebar .linked.vertical > button.titlebutton:last-child, .linked.vertical > combobox:last-child > 
button.combo {
+.linked.vertical > entry:last-child, .linked.vertical > spinbutton:last-child:not(.vertical), 
.linked.vertical > button:last-child, .linked.vertical > combobox:last-child > button.combo {
   border-bottom-left-radius: 3px;
   border-bottom-right-radius: 3px;
   border-style: solid; }
-.linked.vertical > entry:only-child, .linked.vertical > spinbutton:only-child:not(.vertical), notebook > 
header > tabs.linked.vertical > arrow:only-child, notebook > header > tabs.linked.vertical > 
arrow:only-child:hover, notebook > header > tabs.linked.vertical > arrow:only-child:active, notebook > header

tabs.linked.vertical > arrow:only-child:checked, notebook > header > tabs.linked.vertical >

arrow:only-child:backdrop, .linked.vertical >
-button:only-child, headerbar .linked.vertical > button.titlebutton:only-child,
-.titlebar .linked.vertical > button.titlebutton:only-child, .linked.vertical > combobox:only-child > 
button.combo {
+.linked.vertical > entry:only-child, .linked.vertical > spinbutton:only-child:not(.vertical), 
.linked.vertical > button:only-child, .linked.vertical > combobox:only-child > button.combo {
   border-radius: 3px;
   border-style: solid; }
 
 modelbutton.flat,
 .menuitem.button.flat, modelbutton.flat:backdrop, modelbutton.flat:backdrop:hover,
 .menuitem.button.flat:backdrop,
-.menuitem.button.flat:backdrop:hover, button:link, headerbar button.titlebutton:link,
-.titlebar button.titlebutton:link,
-button:visited,
-headerbar button.titlebutton:visited,
-.titlebar button.titlebutton:visited, button:link:hover, button:link:active, button:link:checked,
+.menuitem.button.flat:backdrop:hover, button:link,
+button:visited, button:link:hover, button:link:active, button:link:checked,
 button:visited:hover,
 button:visited:active,
 button:visited:checked, button:link:backdrop,
@@ -1485,8 +1211,7 @@ modelbutton.flat arrow {
   modelbutton.flat arrow.right {
     -gtk-icon-source: -gtk-icontheme("pan-end-symbolic"); }
 
-button.color, headerbar button.color.titlebutton,
-.titlebar button.color.titlebutton {
+button.color {
   padding: 4px; }
   button.color colorswatch:only-child, button.color colorswatch:only-child overlay {
     border-radius: 0; }
@@ -1494,23 +1219,14 @@ button.color, headerbar button.color.titlebutton,
 /*********
  * Links *
  *********/
-*:link, button:link, headerbar button.titlebutton:link,
-.titlebar button.titlebutton:link,
-button:visited,
-headerbar button.titlebutton:visited,
-.titlebar button.titlebutton:visited {
+*:link, button:link,
+button:visited {
   color: #4a90d9; }
   *:link:visited,
-  button:visited,
-  headerbar button.titlebutton:visited,
-  .titlebar button.titlebutton:visited {
+  button:visited {
     color: #2a76c6; }
     *:selected *:link:visited, *:selected button:visited:link,
-    *:selected button:visited,
-    *:selected headerbar button.titlebutton:visited,
-    headerbar *:selected button.titlebutton:visited,
-    *:selected .titlebar button.titlebutton:visited,
-    .titlebar *:selected button.titlebutton:visited {
+    *:selected button:visited {
       color: #a6bed7; }
   *:link:hover, button:hover:link,
   button:hover:visited {
@@ -1536,22 +1252,16 @@ headerbar button.titlebutton:visited,
   *:selected button:visited {
     color: #d3dfeb; }
 
-button:link, headerbar button.titlebutton:link,
-.titlebar button.titlebutton:link,
-button:visited,
-headerbar button.titlebutton:visited,
-.titlebar button.titlebutton:visited {
+button:link,
+button:visited {
   text-shadow: none; }
   button:link:hover, button:link:active, button:link:checked,
   button:visited:hover,
   button:visited:active,
   button:visited:checked {
     text-shadow: none; }
-  button:link > label, headerbar button.titlebutton:link > label,
-  .titlebar button.titlebutton:link > label,
-  button:visited > label,
-  headerbar button.titlebutton:visited > label,
-  .titlebar button.titlebutton:visited > label {
+  button:link > label,
+  button:visited > label {
     text-decoration-line: underline; }
 
 /*****************
@@ -1564,9 +1274,7 @@ spinbutton:not(.vertical) {
     background: none;
     border: none;
     box-shadow: none; }
-  spinbutton:not(.vertical) button,
-  spinbutton:not(.vertical) .titlebar button.titlebutton,
-  .titlebar spinbutton:not(.vertical) button.titlebutton {
+  spinbutton:not(.vertical) button {
     margin: 0;
     background-image: none;
     border-style: none none none solid;
@@ -1659,9 +1367,7 @@ spinbutton.vertical entry, spinbutton.vertical spinbutton:not(.vertical) {
   min-width: 32px;
   padding: 0;
   border-radius: 0; }
-spinbutton.vertical button,
-spinbutton.vertical .titlebar button.titlebutton,
-.titlebar spinbutton.vertical button.titlebutton {
+spinbutton.vertical button {
   min-height: 32px;
   min-width: 32px;
   padding: 0; }
@@ -1876,9 +1582,7 @@ headerbar {
       background-image: linear-gradient(to bottom, #215d9c);
       box-shadow: inset 0 1px rgba(44, 100, 160, 0.442); }
     .selection-mode.titlebar:not(headerbar) button,
-    headerbar.selection-mode button,
-    headerbar.selection-mode .titlebar button.titlebutton,
-    .titlebar headerbar.selection-mode button.titlebutton {
+    headerbar.selection-mode button {
       color: #ffffff;
       outline-color: rgba(255, 255, 255, 0.3);
       border-color: #0b1e33;
@@ -2118,24 +1822,18 @@ headerbar {
     padding: 0 4px;
     min-height: 36px; }
     .default-decoration.titlebar:not(headerbar) button,
-    headerbar.default-decoration button,
-    headerbar.default-decoration .titlebar button.titlebutton,
-    .titlebar headerbar.default-decoration button.titlebutton {
+    headerbar.default-decoration button {
       min-height: 26px;
       padding: 0 5px; }
   .titlebar:not(headerbar) entry, .titlebar:not(headerbar) spinbutton:not(.vertical),
   .titlebar:not(headerbar) spinbutton,
   .titlebar:not(headerbar) separator,
   .titlebar:not(headerbar) button,
-  .titlebar:not(headerbar) button.titlebutton,
   headerbar entry,
   headerbar spinbutton:not(.vertical),
   headerbar spinbutton,
   headerbar separator,
-  headerbar button,
-  headerbar button.titlebutton,
-  headerbar .titlebar button.titlebutton,
-  .titlebar headerbar button.titlebutton {
+  headerbar button {
     margin-top: 6px;
     margin-bottom: 6px; }
 
@@ -2243,9 +1941,7 @@ treeview.view {
     border-radius: 4px; }
     treeview.view.trough:selected {
       background-color: #184472; }
-  treeview.view header button,
-  treeview.view header .titlebar button.titlebutton,
-  .titlebar treeview.view header button.titlebutton {
+  treeview.view header button {
     color: #8c8c8b;
     background-color: #292929;
     font-weight: bold;
@@ -2266,9 +1962,7 @@ treeview.view {
     color: #215d9c;
     box-shadow: inset 1px 1px 0 1px #215d9c, inset -1px 0 0 1px #215d9c, inset 1px 1px #292929, inset -1px 0 
#292929; }
 
-treeview.view header button,
-treeview.view header .titlebar button.titlebutton,
-.titlebar treeview.view header button.titlebutton, treeview.view header button:hover, treeview.view header 
button:active {
+treeview.view header button, treeview.view header button:hover, treeview.view header button:active {
   padding: 3px 6px;
   border-style: none solid solid none;
   border-radius: 0;
@@ -2584,9 +2278,7 @@ notebook > stack:not(:only-child) {
   -GtkScrollbar-min-slider-length: 42;
   -GtkRange-stepper-spacing: 0;
   -GtkRange-trough-under-steppers: 1; }
-scrollbar button, scrollbar headerbar button.titlebutton, headerbar scrollbar button.titlebutton,
-scrollbar .titlebar button.titlebutton,
-.titlebar scrollbar button.titlebutton {
+scrollbar button {
   border: none; }
 scrollbar.overlay-indicator:not(.dragging):not(.hovering) {
   opacity: 0.4;
@@ -3917,9 +3609,7 @@ row.activatable:selected.has-open-popup, row.activatable:selected:hover {
 row.activatable:selected:backdrop {
   background-color: #215d9c; }
 
-row:selected button,
-row:selected .titlebar button.titlebutton,
-.titlebar row:selected button.titlebutton {
+row:selected button {
   color: #eeeeec;
   outline-color: rgba(238, 238, 236, 0.3);
   border-color: #1c1f1f;
@@ -4303,14 +3993,11 @@ placessidebar row {
     padding-right: 2px; }
   placessidebar row label.sidebar-label:dir(rtl) {
     padding-left: 2px; }
-  button.sidebar-button, headerbar button.sidebar-button.titlebutton,
-  .titlebar button.sidebar-button.titlebutton {
+  button.sidebar-button {
     padding: 5px;
     border-radius: 100%;
     -gtk-outline-radius: 100%; }
-    button.sidebar-button:not(:hover):not(:active) > image, headerbar 
button.sidebar-button.titlebutton:not(:hover):not(:active) > image,
-    .titlebar button.sidebar-button.titlebutton:not(:hover):not(:active) > image, 
button.sidebar-button:backdrop > image, headerbar button.sidebar-button.titlebutton:backdrop > image,
-    .titlebar button.sidebar-button.titlebutton:backdrop > image {
+    button.sidebar-button:not(:hover):not(:active) > image, button.sidebar-button:backdrop > image {
       opacity: 0.7; }
 placessidebar row:selected:active {
   box-shadow: none; }
@@ -4388,24 +4075,10 @@ infobar {
   color: #ffffff;
   text-shadow: 0 1px #184472;
   border-color: #184472; }
-  .info button, .info headerbar button.titlebutton, headerbar .info button.titlebutton,
-  .info .titlebar button.titlebutton,
-  .titlebar .info button.titlebutton,
+  .info button,
   .question button,
-  .question headerbar button.titlebutton,
-  headerbar .question button.titlebutton,
-  .question .titlebar button.titlebutton,
-  .titlebar .question button.titlebutton,
   .warning button,
-  .warning headerbar button.titlebutton,
-  headerbar .warning button.titlebutton,
-  .warning .titlebar button.titlebutton,
-  .titlebar .warning button.titlebutton,
-  .error button,
-  .error headerbar button.titlebutton,
-  headerbar .error button.titlebutton,
-  .error .titlebar button.titlebutton,
-  .titlebar .error button.titlebutton {
+  .error button {
     color: #ffffff;
     outline-color: rgba(255, 255, 255, 0.3);
     border-color: #0b1e33;
@@ -4618,9 +4291,7 @@ colorswatch#editor-color-sample {
   padding: 6px;
   border-style: none;
   border-radius: 5px; }
-.scale-popup button, .scale-popup headerbar button.titlebutton, headerbar .scale-popup button.titlebutton,
-.scale-popup .titlebar button.titlebutton,
-.titlebar .scale-popup button.titlebutton {
+.scale-popup button {
   padding: 6px; }
   .scale-popup button:hover {
     background-color: rgba(238, 238, 236, 0.1);
@@ -4663,8 +4334,6 @@ decoration {
     box-shadow: none; }
 
 headerbar button.titlebutton,
-headerbar .titlebar button.titlebutton,
-.titlebar headerbar button.titlebutton,
 .titlebar button.titlebutton {
   text-shadow: 0 -1px rgba(0, 0, 0, 0.81176);
   -gtk-icon-shadow: 0 -1px rgba(0, 0, 0, 0.81176); }
@@ -4768,12 +4437,10 @@ cursor-handle {
 .context-menu {
   font: initial; }
 
-button.circular, headerbar button.circular.titlebutton,
-.titlebar button.circular.titlebutton {
+button.circular {
   border-radius: 20px;
   -gtk-outline-radius: 20px; }
-  button.circular label,
-  .titlebar button.circular.titlebutton label {
+  button.circular label {
     padding: 0; }
 
 .keycap {
@@ -4797,14 +4464,10 @@ button.circular, headerbar button.circular.titlebutton,
 *:drop(active) {
   border: 1px solid black; }
 
-stackswitcher button.text-button,
-stackswitcher .titlebar button.text-button.titlebutton,
-.titlebar stackswitcher button.text-button.titlebutton {
+stackswitcher button.text-button {
   min-width: 100px; }
 
 stackswitcher button.circular,
-stackswitcher .titlebar button.circular.titlebutton,
-.titlebar stackswitcher button.circular.titlebutton,
 stackswitcher button.text-button.circular {
   min-width: 32px;
   min-height: 32px;
diff --git a/gtk/theme/Adwaita/gtk-contained.css b/gtk/theme/Adwaita/gtk-contained.css
index f9d22f2..2c633ca 100644
--- a/gtk/theme/Adwaita/gtk-contained.css
+++ b/gtk/theme/Adwaita/gtk-contained.css
@@ -346,10 +346,8 @@ entry, spinbutton:not(.vertical) {
     background-image: -gtk-gradient(radial, center center, 0, center center, 0.01, to(#4a90d9), 
to(transparent)); }
   to {
     background-image: -gtk-gradient(radial, center center, 0, center center, 0.5, to(#4a90d9), 
to(transparent)); } }
-notebook > header > tabs > arrow,
-button,
-headerbar button.titlebutton,
-.titlebar button.titlebutton {
+notebook > header > tabs > arrow, headerbar button.titlebutton,
+.titlebar button.titlebutton, button {
   min-height: 24px;
   min-width: 16px;
   padding: 4px 8px;
@@ -363,11 +361,9 @@ headerbar button.titlebutton,
   text-shadow: 0 1px rgba(255, 255, 255, 0.76923);
   -gtk-icon-shadow: 0 1px rgba(255, 255, 255, 0.76923);
   box-shadow: inset 0 1px rgba(255, 255, 255, 0.8), 0 1px rgba(255, 255, 255, 0); }
-  notebook > header > tabs > arrow.flat,
-  button.flat,
-  notebook > header > tabs > arrow,
-  button.sidebar-button,
-  headerbar button.titlebutton,
+  notebook > header > tabs > arrow.flat, headerbar notebook > header > tabs > arrow.titlebutton, headerbar 
button.titlebutton,
+  .titlebar notebook > header > tabs > arrow.titlebutton,
+  .titlebar button.titlebutton, button.flat, notebook > header > tabs > arrow, button.sidebar-button, 
headerbar button.titlebutton,
   .titlebar button.titlebutton {
     border-color: transparent;
     background-color: transparent;
@@ -376,25 +372,19 @@ headerbar button.titlebutton,
     text-shadow: none;
     -gtk-icon-shadow: none;
     transition: none; }
-    notebook > header > tabs > arrow.flat:hover,
-    button.flat:hover,
-    notebook > header > tabs > arrow:hover,
-    button.sidebar-button:hover,
-    headerbar button.titlebutton:hover,
+    notebook > header > tabs > arrow.flat:hover, headerbar notebook > header > tabs > 
arrow.titlebutton:hover, headerbar button.titlebutton:hover,
+    .titlebar notebook > header > tabs > arrow.titlebutton:hover,
+    .titlebar button.titlebutton:hover, button.flat:hover, notebook > header > tabs > arrow:hover, 
button.sidebar-button:hover, headerbar button.titlebutton:hover,
     .titlebar button.titlebutton:hover {
       transition: all 200ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
       transition-duration: 500ms; }
-      notebook > header > tabs > arrow.flat:hover:active,
-      button.flat:hover:active,
-      notebook > header > tabs > arrow:hover:active,
-      button.sidebar-button:hover:active,
-      headerbar button.titlebutton:hover:active,
+      notebook > header > tabs > arrow.flat:hover:active, headerbar notebook > header > tabs > 
arrow.titlebutton:hover:active, headerbar button.titlebutton:hover:active,
+      .titlebar notebook > header > tabs > arrow.titlebutton:hover:active,
+      .titlebar button.titlebutton:hover:active, button.flat:hover:active, notebook > header > tabs > 
arrow:hover:active, button.sidebar-button:hover:active, headerbar button.titlebutton:hover:active,
       .titlebar button.titlebutton:hover:active {
         transition: all 200ms cubic-bezier(0.25, 0.46, 0.45, 0.94); }
-  notebook > header > tabs > arrow:hover,
-  button:hover,
-  headerbar button.titlebutton:hover,
-  .titlebar button.titlebutton:hover {
+  notebook > header > tabs > arrow:hover, headerbar button.titlebutton:hover,
+  .titlebar button.titlebutton:hover, button:hover {
     color: #2e3436;
     outline-color: rgba(46, 52, 54, 0.3);
     border-color: #9d9d99;
@@ -409,13 +399,9 @@ headerbar button.titlebutton,
     -gtk-icon-shadow: 0 1px rgba(255, 255, 255, 0.76923);
     box-shadow: inset 0 1px white, 0 1px rgba(255, 255, 255, 0);
     -gtk-icon-effect: highlight; }
-  notebook > header > tabs > arrow:active, notebook > header > tabs > arrow:checked,
-  button:active,
-  headerbar button.titlebutton:active,
-  .titlebar button.titlebutton:active,
-  button:checked,
-  headerbar button.titlebutton:checked,
-  .titlebar button.titlebutton:checked {
+  notebook > header > tabs > arrow:active, headerbar button.titlebutton:active,
+  .titlebar button.titlebutton:active, notebook > header > tabs > arrow:checked, headerbar 
button.titlebutton:checked,
+  .titlebar button.titlebutton:checked, button:active, button:checked {
     color: #2e3436;
     outline-color: rgba(46, 52, 54, 0.3);
     border-color: #9d9d99;
@@ -424,14 +410,10 @@ headerbar button.titlebutton,
     -gtk-icon-shadow: 0 1px rgba(255, 255, 255, 0.76923);
     box-shadow: inset 0 2px 1px -2px rgba(0, 0, 0, 0.6), 0 1px rgba(255, 255, 255, 0);
     transition-duration: 50ms; }
-  notebook > header > tabs > arrow:backdrop, notebook > header > tabs > arrow.flat:backdrop,
-  button:backdrop,
-  headerbar button.titlebutton:backdrop,
-  .titlebar button.titlebutton:backdrop,
-  button.flat:backdrop,
-  notebook > header > tabs > arrow:backdrop,
-  button.sidebar-button:backdrop,
-  headerbar button.titlebutton:backdrop,
+  notebook > header > tabs > arrow:backdrop, headerbar button.titlebutton:backdrop,
+  .titlebar button.titlebutton:backdrop, notebook > header > tabs > arrow.flat:backdrop, headerbar notebook

header > tabs > arrow.titlebutton:backdrop, headerbar button.titlebutton:backdrop,

+  .titlebar notebook > header > tabs > arrow.titlebutton:backdrop,
+  .titlebar button.titlebutton:backdrop, button:backdrop, button.flat:backdrop, notebook > header > tabs > 
arrow:backdrop, button.sidebar-button:backdrop, headerbar button.titlebutton:backdrop,
   .titlebar button.titlebutton:backdrop {
     color: #8b8e8f;
     border-color: #a5a5a1;
@@ -440,29 +422,23 @@ headerbar button.titlebutton,
     -gtk-icon-shadow: none;
     box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0);
     -gtk-icon-effect: none; }
-    notebook > header > tabs > arrow:backdrop:active, notebook > header > tabs > arrow:backdrop:checked, 
notebook > header > tabs > arrow.flat:backdrop:active, notebook > header > tabs > arrow.flat:backdrop:checked,
-    button:backdrop:active,
-    button:backdrop:checked,
-    button.flat:backdrop:active,
-    notebook > header > tabs > arrow:backdrop:active,
-    button.sidebar-button:backdrop:active,
-    headerbar button.titlebutton:backdrop:active,
-    .titlebar button.titlebutton:backdrop:active,
-    button.flat:backdrop:checked,
-    notebook > header > tabs > arrow:backdrop:checked,
-    button.sidebar-button:backdrop:checked,
-    headerbar button.titlebutton:backdrop:checked,
+    notebook > header > tabs > arrow:backdrop:active, headerbar button.titlebutton:backdrop:active,
+    .titlebar button.titlebutton:backdrop:active, notebook > header > tabs > arrow:backdrop:checked, 
headerbar button.titlebutton:backdrop:checked,
+    .titlebar button.titlebutton:backdrop:checked, notebook > header > tabs > arrow.flat:backdrop:active, 
headerbar notebook > header > tabs > arrow.titlebutton:backdrop:active, headerbar 
button.titlebutton:backdrop:active,
+    .titlebar notebook > header > tabs > arrow.titlebutton:backdrop:active,
+    .titlebar button.titlebutton:backdrop:active, notebook > header > tabs > arrow.flat:backdrop:checked, 
headerbar notebook > header > tabs > arrow.titlebutton:backdrop:checked, headerbar 
button.titlebutton:backdrop:checked,
+    .titlebar notebook > header > tabs > arrow.titlebutton:backdrop:checked,
+    .titlebar button.titlebutton:backdrop:checked, button:backdrop:active, button:backdrop:checked, 
button.flat:backdrop:active, notebook > header > tabs > arrow:backdrop:active, 
button.sidebar-button:backdrop:active, headerbar button.titlebutton:backdrop:active,
+    .titlebar button.titlebutton:backdrop:active, button.flat:backdrop:checked, notebook > header > tabs > 
arrow:backdrop:checked, button.sidebar-button:backdrop:checked, headerbar button.titlebutton:backdrop:checked,
     .titlebar button.titlebutton:backdrop:checked {
       color: #8b8e8f;
       border-color: #a5a5a1;
       background-image: linear-gradient(to bottom, #d1d1cf);
       box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0); }
-    notebook > header > tabs > arrow:backdrop:disabled, notebook > header > tabs > 
arrow.flat:backdrop:disabled,
-    button:backdrop:disabled,
-    button.flat:backdrop:disabled,
-    notebook > header > tabs > arrow:backdrop:disabled,
-    button.sidebar-button:backdrop:disabled,
-    headerbar button.titlebutton:backdrop:disabled,
+    notebook > header > tabs > arrow:backdrop:disabled, headerbar button.titlebutton:backdrop:disabled,
+    .titlebar button.titlebutton:backdrop:disabled, notebook > header > tabs > arrow.flat:backdrop:disabled, 
headerbar notebook > header > tabs > arrow.titlebutton:backdrop:disabled, headerbar 
button.titlebutton:backdrop:disabled,
+    .titlebar notebook > header > tabs > arrow.titlebutton:backdrop:disabled,
+    .titlebar button.titlebutton:backdrop:disabled, button:backdrop:disabled, button.flat:backdrop:disabled, 
notebook > header > tabs > arrow:backdrop:disabled, button.sidebar-button:backdrop:disabled, headerbar 
button.titlebutton:backdrop:disabled,
     .titlebar button.titlebutton:backdrop:disabled {
       color: #c3c3c0;
       border-color: #a5a5a1;
@@ -470,38 +446,28 @@ headerbar button.titlebutton,
       text-shadow: none;
       -gtk-icon-shadow: none;
       box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0); }
-    notebook > header > tabs > arrow:backdrop:disabled:active, notebook > header > tabs > 
arrow:backdrop:disabled:checked, notebook > header > tabs > arrow.flat:backdrop:disabled:active, notebook > 
header > tabs > arrow.flat:backdrop:disabled:checked,
-    button:backdrop:disabled:active,
-    button:backdrop:disabled:checked,
-    button.flat:backdrop:disabled:active,
-    notebook > header > tabs > arrow:backdrop:disabled:active,
-    button.sidebar-button:backdrop:disabled:active,
-    headerbar button.titlebutton:backdrop:disabled:active,
-    .titlebar button.titlebutton:backdrop:disabled:active,
-    button.flat:backdrop:disabled:checked,
-    notebook > header > tabs > arrow:backdrop:disabled:checked,
-    button.sidebar-button:backdrop:disabled:checked,
-    headerbar button.titlebutton:backdrop:disabled:checked,
+    notebook > header > tabs > arrow:backdrop:disabled:active, headerbar 
button.titlebutton:backdrop:disabled:active,
+    .titlebar button.titlebutton:backdrop:disabled:active, notebook > header > tabs > 
arrow:backdrop:disabled:checked, headerbar button.titlebutton:backdrop:disabled:checked,
+    .titlebar button.titlebutton:backdrop:disabled:checked, notebook > header > tabs > 
arrow.flat:backdrop:disabled:active, headerbar notebook > header > tabs > 
arrow.titlebutton:backdrop:disabled:active, headerbar button.titlebutton:backdrop:disabled:active,
+    .titlebar notebook > header > tabs > arrow.titlebutton:backdrop:disabled:active,
+    .titlebar button.titlebutton:backdrop:disabled:active, notebook > header > tabs > 
arrow.flat:backdrop:disabled:checked, headerbar notebook > header > tabs > 
arrow.titlebutton:backdrop:disabled:checked, headerbar button.titlebutton:backdrop:disabled:checked,
+    .titlebar notebook > header > tabs > arrow.titlebutton:backdrop:disabled:checked,
+    .titlebar button.titlebutton:backdrop:disabled:checked, button:backdrop:disabled:active, 
button:backdrop:disabled:checked, button.flat:backdrop:disabled:active, notebook > header > tabs > 
arrow:backdrop:disabled:active, button.sidebar-button:backdrop:disabled:active, headerbar 
button.titlebutton:backdrop:disabled:active,
+    .titlebar button.titlebutton:backdrop:disabled:active, button.flat:backdrop:disabled:checked, notebook > 
header > tabs > arrow:backdrop:disabled:checked, button.sidebar-button:backdrop:disabled:checked, headerbar 
button.titlebutton:backdrop:disabled:checked,
     .titlebar button.titlebutton:backdrop:disabled:checked {
       color: #c3c3c0;
       border-color: #a5a5a1;
       background-image: linear-gradient(to bottom, #e4e4e4);
       box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0); }
-  notebook > header > tabs > arrow.flat:backdrop, notebook > header > tabs > arrow.flat:disabled, notebook > 
header > tabs > arrow.flat:backdrop:disabled,
-  button.flat:backdrop,
-  notebook > header > tabs > arrow:backdrop,
-  button.sidebar-button:backdrop,
-  headerbar button.titlebutton:backdrop,
-  .titlebar button.titlebutton:backdrop,
-  button.flat:disabled,
-  notebook > header > tabs > arrow:disabled,
-  button.sidebar-button:disabled,
-  headerbar button.titlebutton:disabled,
-  .titlebar button.titlebutton:disabled,
-  button.flat:backdrop:disabled,
-  notebook > header > tabs > arrow:backdrop:disabled,
-  button.sidebar-button:backdrop:disabled,
-  headerbar button.titlebutton:backdrop:disabled,
+  notebook > header > tabs > arrow.flat:backdrop, headerbar notebook > header > tabs > 
arrow.titlebutton:backdrop, headerbar button.titlebutton:backdrop,
+  .titlebar notebook > header > tabs > arrow.titlebutton:backdrop,
+  .titlebar button.titlebutton:backdrop, notebook > header > tabs > arrow.flat:disabled, headerbar notebook

header > tabs > arrow.titlebutton:disabled, headerbar button.titlebutton:disabled,

+  .titlebar notebook > header > tabs > arrow.titlebutton:disabled,
+  .titlebar button.titlebutton:disabled, notebook > header > tabs > arrow.flat:backdrop:disabled, headerbar 
notebook > header > tabs > arrow.titlebutton:backdrop:disabled, headerbar 
button.titlebutton:backdrop:disabled,
+  .titlebar notebook > header > tabs > arrow.titlebutton:backdrop:disabled,
+  .titlebar button.titlebutton:backdrop:disabled, button.flat:backdrop, notebook > header > tabs > 
arrow:backdrop, button.sidebar-button:backdrop, headerbar button.titlebutton:backdrop,
+  .titlebar button.titlebutton:backdrop, button.flat:disabled, notebook > header > tabs > arrow:disabled, 
button.sidebar-button:disabled, headerbar button.titlebutton:disabled,
+  .titlebar button.titlebutton:disabled, button.flat:backdrop:disabled, notebook > header > tabs > 
arrow:backdrop:disabled, button.sidebar-button:backdrop:disabled, headerbar 
button.titlebutton:backdrop:disabled,
   .titlebar button.titlebutton:backdrop:disabled {
     border-color: transparent;
     background-color: transparent;
@@ -509,33 +475,52 @@ headerbar button.titlebutton,
     box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0);
     text-shadow: none;
     -gtk-icon-shadow: none; }
-  notebook > header > tabs > arrow:disabled,
-  button:disabled,
-  headerbar button.titlebutton:disabled,
-  .titlebar button.titlebutton:disabled {
+  notebook > header > tabs > arrow:disabled, headerbar button.titlebutton:disabled,
+  .titlebar button.titlebutton:disabled, button:disabled {
     color: #8b8e8f;
     border-color: #9d9d99;
     background-image: linear-gradient(to bottom, #f1f1f1);
     text-shadow: none;
     -gtk-icon-shadow: none;
     box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0); }
-    notebook > header > tabs > arrow:disabled:active, notebook > header > tabs > arrow:disabled:checked,
-    button:disabled:active,
-    button:disabled:checked {
+    notebook > header > tabs > arrow:disabled:active, headerbar button.titlebutton:disabled:active,
+    .titlebar button.titlebutton:disabled:active, notebook > header > tabs > arrow:disabled:checked, 
headerbar button.titlebutton:disabled:checked,
+    .titlebar button.titlebutton:disabled:checked, button:disabled:active, button:disabled:checked {
       color: #8b8e8f;
       border-color: #9d9d99;
       background-image: linear-gradient(to bottom, #e9e9e8, #f1f1f1);
       box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0); }
-  notebook > header > tabs > arrow.osd,
-  button.osd,
-  headerbar button.osd.titlebutton,
-  .titlebar button.osd.titlebutton {
-    color: #eeeeec;
-    border-radius: 5px;
-    outline-color: rgba(238, 238, 236, 0.3);
-    color: #eeeeec;
+  notebook > header > tabs > arrow.text-button, headerbar button.text-button.titlebutton,
+  .titlebar button.text-button.titlebutton, button.text-button {
+    padding-left: 16px;
+    padding-right: 16px; }
+  notebook > header > tabs > arrow.text-button.image-button label:first-child, headerbar 
button.text-button.image-button.titlebutton label:first-child,
+  .titlebar button.text-button.image-button.titlebutton label:first-child, button.text-button.image-button 
label:first-child {
+    padding-left: 8px; }
+  notebook > header > tabs > arrow.text-button.image-button label:last-child, headerbar 
button.text-button.image-button.titlebutton label:last-child,
+  .titlebar button.text-button.image-button.titlebutton label:last-child, button.text-button.image-button 
label:last-child {
+    padding-right: 8px; }
+button.osd {
+  color: #eeeeec;
+  border-radius: 5px;
+  outline-color: rgba(238, 238, 236, 0.3);
+  color: #eeeeec;
+  border-color: rgba(0, 0, 0, 0.7);
+  background-image: linear-gradient(to bottom, rgba(32, 37, 38, 0.8));
+  background-clip: padding-box;
+  box-shadow: inset 0 1px rgba(255, 255, 255, 0.1);
+  text-shadow: 0 1px black;
+  -gtk-icon-shadow: 0 1px black;
+  outline-color: rgba(238, 238, 236, 0.3);
+  border: none;
+  box-shadow: none; }
+  button.osd.image-button {
+    min-height: 48px;
+    min-width: 48px; }
+  button.osd:hover {
+    color: white;
     border-color: rgba(0, 0, 0, 0.7);
-    background-image: linear-gradient(to bottom, rgba(32, 37, 38, 0.8));
+    background-image: linear-gradient(to bottom, rgba(60, 69, 71, 0.8));
     background-clip: padding-box;
     box-shadow: inset 0 1px rgba(255, 255, 255, 0.1);
     text-shadow: 0 1px black;
@@ -543,12 +528,107 @@ headerbar button.titlebutton,
     outline-color: rgba(238, 238, 236, 0.3);
     border: none;
     box-shadow: none; }
-    notebook > header > tabs > arrow.osd.image-button,
-    button.osd.image-button {
-      min-height: 48px;
-      min-width: 48px; }
-    notebook > header > tabs > arrow.osd:hover,
-    button.osd:hover {
+  button.osd:active, button.osd:checked {
+    color: white;
+    border-color: rgba(0, 0, 0, 0.7);
+    background-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.7));
+    background-clip: padding-box;
+    box-shadow: none;
+    text-shadow: none;
+    -gtk-icon-shadow: none;
+    outline-color: rgba(238, 238, 236, 0.3);
+    border: none;
+    box-shadow: none; }
+  button.osd:disabled, button.osd:backdrop:disabled {
+    color: #878a89;
+    border-color: rgba(0, 0, 0, 0.7);
+    background-image: linear-gradient(to bottom, rgba(53, 57, 58, 0.5));
+    background-clip: padding-box;
+    box-shadow: none;
+    text-shadow: none;
+    -gtk-icon-shadow: none;
+    border: none; }
+  button.osd:backdrop {
+    color: #eeeeec;
+    border-color: rgba(0, 0, 0, 0.7);
+    background-image: linear-gradient(to bottom, rgba(32, 37, 38, 0.8));
+    background-clip: padding-box;
+    box-shadow: none;
+    text-shadow: none;
+    -gtk-icon-shadow: none;
+    border: none; }
+popover.background.touch-selection button, popover.background.magnifier button, .csd 
popover.background.touch-selection button, .csd popover.background.magnifier button, .app-notification button,
+.app-notification.frame button, .osd button {
+  color: #eeeeec;
+  border-color: rgba(0, 0, 0, 0.7);
+  background-image: linear-gradient(to bottom, rgba(32, 37, 38, 0.8));
+  background-clip: padding-box;
+  box-shadow: inset 0 1px rgba(255, 255, 255, 0.1);
+  text-shadow: 0 1px black;
+  -gtk-icon-shadow: 0 1px black;
+  outline-color: rgba(238, 238, 236, 0.3); }
+  popover.background.touch-selection button:hover, popover.background.magnifier button:hover, 
.app-notification button:hover, .osd button:hover {
+    color: white;
+    border-color: rgba(0, 0, 0, 0.7);
+    background-image: linear-gradient(to bottom, rgba(60, 69, 71, 0.8));
+    background-clip: padding-box;
+    box-shadow: inset 0 1px rgba(255, 255, 255, 0.1);
+    text-shadow: 0 1px black;
+    -gtk-icon-shadow: 0 1px black;
+    outline-color: rgba(238, 238, 236, 0.3); }
+  popover.background.touch-selection button:active, popover.background.magnifier button:active, 
.app-notification button:active, popover.background.touch-selection button:checked, 
popover.background.magnifier button:checked, .app-notification button:checked, 
popover.background.touch-selection button:backdrop:active, popover.background.magnifier 
button:backdrop:active, .app-notification button:backdrop:active, popover.background.touch-selection 
button:backdrop:checked, popover.background.magnifier button:backdrop:checked, .app-notification 
button:backdrop:checked, .osd button:active, .osd button:checked, .osd button:backdrop:active, .osd 
button:backdrop:checked {
+    color: white;
+    border-color: rgba(0, 0, 0, 0.7);
+    background-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.7));
+    background-clip: padding-box;
+    box-shadow: none;
+    text-shadow: none;
+    -gtk-icon-shadow: none;
+    outline-color: rgba(238, 238, 236, 0.3); }
+  popover.background.touch-selection button:disabled, popover.background.magnifier button:disabled, 
.app-notification button:disabled, popover.background.touch-selection button:backdrop:disabled, 
popover.background.magnifier button:backdrop:disabled, .app-notification button:backdrop:disabled, .osd 
button:disabled, .osd button:backdrop:disabled {
+    color: #878a89;
+    border-color: rgba(0, 0, 0, 0.7);
+    background-image: linear-gradient(to bottom, rgba(53, 57, 58, 0.5));
+    background-clip: padding-box;
+    box-shadow: none;
+    text-shadow: none;
+    -gtk-icon-shadow: none; }
+  popover.background.touch-selection button:backdrop, popover.background.magnifier button:backdrop, 
.app-notification button:backdrop, .osd button:backdrop {
+    color: #eeeeec;
+    border-color: rgba(0, 0, 0, 0.7);
+    background-image: linear-gradient(to bottom, rgba(32, 37, 38, 0.8));
+    background-clip: padding-box;
+    box-shadow: none;
+    text-shadow: none;
+    -gtk-icon-shadow: none; }
+  popover.background.touch-selection button.flat, popover.background.touch-selection notebook > header > 
tabs > arrow, popover.background.touch-selection button.sidebar-button, popover.background.touch-selection 
headerbar button.titlebutton, headerbar popover.background.touch-selection button.titlebutton,
+  popover.background.touch-selection .titlebar button.titlebutton,
+  .titlebar popover.background.touch-selection button.titlebutton, popover.background.magnifier button.flat, 
popover.background.magnifier notebook > header > tabs > arrow, popover.background.magnifier 
button.sidebar-button, popover.background.magnifier headerbar button.titlebutton, headerbar 
popover.background.magnifier button.titlebutton,
+  popover.background.magnifier .titlebar button.titlebutton,
+  .titlebar popover.background.magnifier button.titlebutton, .csd popover.background.touch-selection 
notebook > header > tabs > arrow, .csd popover.background.magnifier notebook > header > tabs > arrow, 
.app-notification button.flat, .app-notification notebook > header > tabs > arrow, .app-notification 
button.sidebar-button, .app-notification headerbar button.titlebutton, headerbar .app-notification 
button.titlebutton,
+  .app-notification .titlebar button.titlebutton,
+  .titlebar .app-notification button.titlebutton,
+  .app-notification.frame notebook > header > tabs > arrow, .osd button.flat, .osd notebook > header > tabs

arrow, .osd button.sidebar-button, .osd headerbar button.titlebutton, headerbar .osd button.titlebutton,

+  .osd .titlebar button.titlebutton,
+  .titlebar .osd button.titlebutton {
+    border-color: transparent;
+    background-color: transparent;
+    background-image: none;
+    box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0);
+    text-shadow: none;
+    -gtk-icon-shadow: none;
+    box-shadow: none;
+    text-shadow: 0 1px black;
+    -gtk-icon-shadow: 0 1px black; }
+    popover.background.touch-selection button.flat:hover, popover.background.touch-selection notebook > 
header > tabs > arrow:hover, popover.background.touch-selection button.sidebar-button:hover, 
popover.background.touch-selection headerbar button.titlebutton:hover, headerbar 
popover.background.touch-selection button.titlebutton:hover,
+    popover.background.touch-selection .titlebar button.titlebutton:hover,
+    .titlebar popover.background.touch-selection button.titlebutton:hover, popover.background.magnifier 
button.flat:hover, popover.background.magnifier notebook > header > tabs > arrow:hover, 
popover.background.magnifier button.sidebar-button:hover, popover.background.magnifier headerbar 
button.titlebutton:hover, headerbar popover.background.magnifier button.titlebutton:hover,
+    popover.background.magnifier .titlebar button.titlebutton:hover,
+    .titlebar popover.background.magnifier button.titlebutton:hover, .app-notification button.flat:hover, 
.app-notification notebook > header > tabs > arrow:hover, .app-notification button.sidebar-button:hover, 
.app-notification headerbar button.titlebutton:hover, headerbar .app-notification button.titlebutton:hover,
+    .app-notification .titlebar button.titlebutton:hover,
+    .titlebar .app-notification button.titlebutton:hover, .osd button.flat:hover, .osd notebook > header > 
tabs > arrow:hover, .osd button.sidebar-button:hover, .osd headerbar button.titlebutton:hover, headerbar .osd 
button.titlebutton:hover,
+    .osd .titlebar button.titlebutton:hover,
+    .titlebar .osd button.titlebutton:hover {
       color: white;
       border-color: rgba(0, 0, 0, 0.7);
       background-image: linear-gradient(to bottom, rgba(60, 69, 71, 0.8));
@@ -556,84 +636,186 @@ headerbar button.titlebutton,
       box-shadow: inset 0 1px rgba(255, 255, 255, 0.1);
       text-shadow: 0 1px black;
       -gtk-icon-shadow: 0 1px black;
-      outline-color: rgba(238, 238, 236, 0.3);
-      border: none;
-      box-shadow: none; }
-    notebook > header > tabs > arrow.osd:active, notebook > header > tabs > arrow.osd:checked,
-    button.osd:active,
-    button.osd:checked {
-      color: white;
+      outline-color: rgba(238, 238, 236, 0.3); }
+    popover.background.touch-selection button.flat:disabled, popover.background.touch-selection notebook > 
header > tabs > arrow:disabled, popover.background.touch-selection button.sidebar-button:disabled, 
popover.background.touch-selection headerbar button.titlebutton:disabled, headerbar 
popover.background.touch-selection button.titlebutton:disabled,
+    popover.background.touch-selection .titlebar button.titlebutton:disabled,
+    .titlebar popover.background.touch-selection button.titlebutton:disabled, popover.background.magnifier 
button.flat:disabled, popover.background.magnifier notebook > header > tabs > arrow:disabled, 
popover.background.magnifier button.sidebar-button:disabled, popover.background.magnifier headerbar 
button.titlebutton:disabled, headerbar popover.background.magnifier button.titlebutton:disabled,
+    popover.background.magnifier .titlebar button.titlebutton:disabled,
+    .titlebar popover.background.magnifier button.titlebutton:disabled, .app-notification 
button.flat:disabled, .app-notification notebook > header > tabs > arrow:disabled, .app-notification 
button.sidebar-button:disabled, .app-notification headerbar button.titlebutton:disabled, headerbar 
.app-notification button.titlebutton:disabled,
+    .app-notification .titlebar button.titlebutton:disabled,
+    .titlebar .app-notification button.titlebutton:disabled, .osd button.flat:disabled, .osd notebook > 
header > tabs > arrow:disabled, .osd button.sidebar-button:disabled, .osd headerbar 
button.titlebutton:disabled, headerbar .osd button.titlebutton:disabled,
+    .osd .titlebar button.titlebutton:disabled,
+    .titlebar .osd button.titlebutton:disabled {
+      color: #878a89;
       border-color: rgba(0, 0, 0, 0.7);
-      background-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.7));
+      background-image: linear-gradient(to bottom, rgba(53, 57, 58, 0.5));
       background-clip: padding-box;
       box-shadow: none;
       text-shadow: none;
       -gtk-icon-shadow: none;
-      outline-color: rgba(238, 238, 236, 0.3);
-      border: none;
+      background-image: none;
+      border-color: transparent;
       box-shadow: none; }
-    notebook > header > tabs > arrow.osd:disabled, notebook > header > tabs > arrow.osd:backdrop:disabled,
-    button.osd:disabled,
-    button.osd:backdrop:disabled {
-      color: #878a89;
+    popover.background.touch-selection button.flat:backdrop, popover.background.touch-selection notebook > 
header > tabs > arrow:backdrop, popover.background.touch-selection button.sidebar-button:backdrop, 
popover.background.touch-selection headerbar button.titlebutton:backdrop, headerbar 
popover.background.touch-selection button.titlebutton:backdrop,
+    popover.background.touch-selection .titlebar button.titlebutton:backdrop,
+    .titlebar popover.background.touch-selection button.titlebutton:backdrop, popover.background.magnifier 
button.flat:backdrop, popover.background.magnifier notebook > header > tabs > arrow:backdrop, 
popover.background.magnifier button.sidebar-button:backdrop, popover.background.magnifier headerbar 
button.titlebutton:backdrop, headerbar popover.background.magnifier button.titlebutton:backdrop,
+    popover.background.magnifier .titlebar button.titlebutton:backdrop,
+    .titlebar popover.background.magnifier button.titlebutton:backdrop, .app-notification 
button.flat:backdrop, .app-notification notebook > header > tabs > arrow:backdrop, .app-notification 
button.sidebar-button:backdrop, .app-notification headerbar button.titlebutton:backdrop, headerbar 
.app-notification button.titlebutton:backdrop,
+    .app-notification .titlebar button.titlebutton:backdrop,
+    .titlebar .app-notification button.titlebutton:backdrop, .osd button.flat:backdrop, .osd notebook > 
header > tabs > arrow:backdrop, .osd button.sidebar-button:backdrop, .osd headerbar 
button.titlebutton:backdrop, headerbar .osd button.titlebutton:backdrop,
+    .osd .titlebar button.titlebutton:backdrop,
+    .titlebar .osd button.titlebutton:backdrop {
+      border-color: transparent;
+      background-color: transparent;
+      background-image: none;
+      box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0);
+      text-shadow: none;
+      -gtk-icon-shadow: none; }
+    popover.background.touch-selection button.flat:active, popover.background.touch-selection notebook > 
header > tabs > arrow:active, popover.background.touch-selection button.sidebar-button:active, 
popover.background.touch-selection headerbar button.titlebutton:active, headerbar 
popover.background.touch-selection button.titlebutton:active,
+    popover.background.touch-selection .titlebar button.titlebutton:active,
+    .titlebar popover.background.touch-selection button.titlebutton:active, popover.background.magnifier 
button.flat:active, popover.background.magnifier notebook > header > tabs > arrow:active, 
popover.background.magnifier button.sidebar-button:active, popover.background.magnifier headerbar 
button.titlebutton:active, headerbar popover.background.magnifier button.titlebutton:active,
+    popover.background.magnifier .titlebar button.titlebutton:active,
+    .titlebar popover.background.magnifier button.titlebutton:active, .app-notification button.flat:active, 
.app-notification notebook > header > tabs > arrow:active, .app-notification button.sidebar-button:active, 
.app-notification headerbar button.titlebutton:active, headerbar .app-notification button.titlebutton:active,
+    .app-notification .titlebar button.titlebutton:active,
+    .titlebar .app-notification button.titlebutton:active, popover.background.touch-selection 
button.flat:checked, popover.background.touch-selection notebook > header > tabs > arrow:checked, 
popover.background.touch-selection button.sidebar-button:checked, popover.background.touch-selection 
headerbar button.titlebutton:checked, headerbar popover.background.touch-selection button.titlebutton:checked,
+    popover.background.touch-selection .titlebar button.titlebutton:checked,
+    .titlebar popover.background.touch-selection button.titlebutton:checked, popover.background.magnifier 
button.flat:checked, popover.background.magnifier notebook > header > tabs > arrow:checked, 
popover.background.magnifier button.sidebar-button:checked, popover.background.magnifier headerbar 
button.titlebutton:checked, headerbar popover.background.magnifier button.titlebutton:checked,
+    popover.background.magnifier .titlebar button.titlebutton:checked,
+    .titlebar popover.background.magnifier button.titlebutton:checked, .app-notification 
button.flat:checked, .app-notification notebook > header > tabs > arrow:checked, .app-notification 
button.sidebar-button:checked, .app-notification headerbar button.titlebutton:checked, headerbar 
.app-notification button.titlebutton:checked,
+    .app-notification .titlebar button.titlebutton:checked,
+    .titlebar .app-notification button.titlebutton:checked, .osd button.flat:active, .osd notebook > header

tabs > arrow:active, .osd button.sidebar-button:active, .osd headerbar button.titlebutton:active, headerbar

.osd button.titlebutton:active,
+    .osd .titlebar button.titlebutton:active,
+    .titlebar .osd button.titlebutton:active, .osd button.flat:checked, .osd notebook > header > tabs > 
arrow:checked, .osd button.sidebar-button:checked, .osd headerbar button.titlebutton:checked, headerbar .osd 
button.titlebutton:checked,
+    .osd .titlebar button.titlebutton:checked,
+    .titlebar .osd button.titlebutton:checked {
+      color: white;
       border-color: rgba(0, 0, 0, 0.7);
-      background-image: linear-gradient(to bottom, rgba(53, 57, 58, 0.5));
+      background-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.7));
       background-clip: padding-box;
       box-shadow: none;
       text-shadow: none;
       -gtk-icon-shadow: none;
-      border: none; }
-    notebook > header > tabs > arrow.osd:backdrop,
-    button.osd:backdrop {
-      color: #eeeeec;
-      border-color: rgba(0, 0, 0, 0.7);
-      background-image: linear-gradient(to bottom, rgba(32, 37, 38, 0.8));
-      background-clip: padding-box;
-      box-shadow: none;
+      outline-color: rgba(238, 238, 236, 0.3); }
+button.suggested-action {
+  color: white;
+  outline-color: rgba(255, 255, 255, 0.3);
+  border-color: #1c5187;
+  background-image: linear-gradient(to bottom, #4a90d9, #3986d5 60%, #2a76c6);
+  text-shadow: 0 -1px rgba(0, 0, 0, 0.54353);
+  -gtk-icon-shadow: 0 -1px rgba(0, 0, 0, 0.54353);
+  box-shadow: inset 0 1px rgba(255, 255, 255, 0.4), 0 1px rgba(255, 255, 255, 0); }
+  button.suggested-action.flat, notebook > header > tabs > arrow.suggested-action, 
button.suggested-action.sidebar-button, headerbar button.suggested-action.titlebutton,
+  .titlebar button.suggested-action.titlebutton {
+    border-color: transparent;
+    background-color: transparent;
+    background-image: none;
+    box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0);
+    text-shadow: none;
+    -gtk-icon-shadow: none;
+    color: #4a90d9; }
+  button.suggested-action:hover {
+    color: white;
+    outline-color: rgba(255, 255, 255, 0.3);
+    border-color: #1c5187;
+    /*
+    background-image: linear-gradient(to bottom,
+                                      lighten($c, 16%),
+                                      lighten($c, 6%) 40%,
+                                      lighten($c, 2%));
+    */
+    background-image: linear-gradient(to bottom, #63a0de, #4a90d9 60%, #3986d5);
+    text-shadow: 0 -1px rgba(0, 0, 0, 0.49553);
+    -gtk-icon-shadow: 0 -1px rgba(0, 0, 0, 0.49553);
+    box-shadow: inset 0 1px rgba(255, 255, 255, 0.4), 0 1px rgba(255, 255, 255, 0); }
+  button.suggested-action:active, button.suggested-action:checked {
+    color: white;
+    outline-color: rgba(255, 255, 255, 0.3);
+    border-color: #1c5187;
+    background-image: linear-gradient(to bottom, #276fba, #3583d5);
+    text-shadow: 0 -1px rgba(0, 0, 0, 0.62353);
+    -gtk-icon-shadow: 0 -1px rgba(0, 0, 0, 0.62353);
+    box-shadow: inset 0 2px 1px -2px rgba(0, 0, 0, 0.6), 0 1px rgba(255, 255, 255, 0); }
+  button.suggested-action:backdrop, button.suggested-action.flat:backdrop, notebook > header > tabs > 
arrow.suggested-action:backdrop, button.suggested-action.sidebar-button:backdrop, headerbar 
button.suggested-action.titlebutton:backdrop,
+  .titlebar button.suggested-action.titlebutton:backdrop {
+    color: #dbe9f7;
+    border-color: #4a90d9;
+    background-image: linear-gradient(to bottom, #4a90d9);
+    text-shadow: none;
+    -gtk-icon-shadow: none;
+    box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0); }
+    button.suggested-action:backdrop:active, button.suggested-action:backdrop:checked, 
button.suggested-action.flat:backdrop:active, notebook > header > tabs > 
arrow.suggested-action:backdrop:active, button.suggested-action.sidebar-button:backdrop:active, headerbar 
button.suggested-action.titlebutton:backdrop:active,
+    .titlebar button.suggested-action.titlebutton:backdrop:active, 
button.suggested-action.flat:backdrop:checked, notebook > header > tabs > 
arrow.suggested-action:backdrop:checked, button.suggested-action.sidebar-button:backdrop:checked, headerbar 
button.suggested-action.titlebutton:backdrop:checked,
+    .titlebar button.suggested-action.titlebutton:backdrop:checked {
+      color: #d4e4f4;
+      border-color: #2a76c6;
+      background-image: linear-gradient(to bottom, #2a76c6);
+      box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0); }
+    button.suggested-action:backdrop:disabled, button.suggested-action.flat:backdrop:disabled, notebook > 
header > tabs > arrow.suggested-action:backdrop:disabled, 
button.suggested-action.sidebar-button:backdrop:disabled, headerbar 
button.suggested-action.titlebutton:backdrop:disabled,
+    .titlebar button.suggested-action.titlebutton:backdrop:disabled {
+      color: #c3c3c0;
+      border-color: #a5a5a1;
+      background-image: linear-gradient(to bottom, #f1f1f1);
       text-shadow: none;
       -gtk-icon-shadow: none;
-      border: none; }
-  popover.background.touch-selection button, popover.background.magnifier button, .csd 
popover.background.touch-selection button, .csd popover.background.magnifier button, .app-notification 
button, .app-notification headerbar button.titlebutton, headerbar .app-notification button.titlebutton,
-  .app-notification .titlebar button.titlebutton,
-  .titlebar .app-notification button.titlebutton,
-  .app-notification.frame button, .osd notebook > header > tabs > arrow, .osd
-  button, .osd headerbar button.titlebutton, headerbar .osd button.titlebutton,
-  .osd .titlebar button.titlebutton,
-  .titlebar .osd button.titlebutton {
+      box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0); }
+      button.suggested-action:backdrop:disabled:active, button.suggested-action:backdrop:disabled:checked, 
button.suggested-action.flat:backdrop:disabled:active, notebook > header > tabs > 
arrow.suggested-action:backdrop:disabled:active, 
button.suggested-action.sidebar-button:backdrop:disabled:active, headerbar 
button.suggested-action.titlebutton:backdrop:disabled:active,
+      .titlebar button.suggested-action.titlebutton:backdrop:disabled:active, 
button.suggested-action.flat:backdrop:disabled:checked, notebook > header > tabs > 
arrow.suggested-action:backdrop:disabled:checked, 
button.suggested-action.sidebar-button:backdrop:disabled:checked, headerbar 
button.suggested-action.titlebutton:backdrop:disabled:checked,
+      .titlebar button.suggested-action.titlebutton:backdrop:disabled:checked {
+        color: #8db9e8;
+        border-color: #5094db;
+        background-image: linear-gradient(to bottom, #5094db);
+        box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0); }
+  button.suggested-action.flat:backdrop, notebook > header > tabs > arrow.suggested-action:backdrop, 
button.suggested-action.sidebar-button:backdrop, headerbar button.suggested-action.titlebutton:backdrop,
+  .titlebar button.suggested-action.titlebutton:backdrop, button.suggested-action.flat:disabled, notebook > 
header > tabs > arrow.suggested-action:disabled, button.suggested-action.sidebar-button:disabled, headerbar 
button.suggested-action.titlebutton:disabled,
+  .titlebar button.suggested-action.titlebutton:disabled, button.suggested-action.flat:backdrop:disabled, 
notebook > header > tabs > arrow.suggested-action:backdrop:disabled, 
button.suggested-action.sidebar-button:backdrop:disabled, headerbar 
button.suggested-action.titlebutton:backdrop:disabled,
+  .titlebar button.suggested-action.titlebutton:backdrop:disabled {
+    border-color: transparent;
+    background-color: transparent;
+    background-image: none;
+    box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0);
+    text-shadow: none;
+    -gtk-icon-shadow: none;
+    color: rgba(74, 144, 217, 0.8); }
+  button.suggested-action:disabled {
+    color: #8b8e8f;
+    border-color: #9d9d99;
+    background-image: linear-gradient(to bottom, #f1f1f1);
+    text-shadow: none;
+    -gtk-icon-shadow: none;
+    box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0); }
+    button.suggested-action:disabled:active, button.suggested-action:disabled:checked {
+      color: #b9d4f1;
+      border-color: #1c5187;
+      background-image: linear-gradient(to bottom, #4b8dd3, #5094db);
+      box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0); }
+  .osd button.suggested-action {
     color: #eeeeec;
     border-color: rgba(0, 0, 0, 0.7);
-    background-image: linear-gradient(to bottom, rgba(32, 37, 38, 0.8));
+    background-image: linear-gradient(to bottom, rgba(74, 144, 217, 0.5));
     background-clip: padding-box;
     box-shadow: inset 0 1px rgba(255, 255, 255, 0.1);
     text-shadow: 0 1px black;
     -gtk-icon-shadow: 0 1px black;
     outline-color: rgba(238, 238, 236, 0.3); }
-    popover.background.touch-selection button:hover, popover.background.magnifier button:hover, 
.app-notification button:hover, .osd notebook > header > tabs > arrow:hover, .osd
-    button:hover {
+    .osd button.suggested-action:hover {
       color: white;
       border-color: rgba(0, 0, 0, 0.7);
-      background-image: linear-gradient(to bottom, rgba(60, 69, 71, 0.8));
+      background-image: linear-gradient(to bottom, rgba(74, 144, 217, 0.7));
       background-clip: padding-box;
       box-shadow: inset 0 1px rgba(255, 255, 255, 0.1);
       text-shadow: 0 1px black;
       -gtk-icon-shadow: 0 1px black;
       outline-color: rgba(238, 238, 236, 0.3); }
-    popover.background.touch-selection button:active, popover.background.magnifier button:active, 
.app-notification button:active, popover.background.touch-selection button:checked, 
popover.background.magnifier button:checked, .app-notification button:checked, 
popover.background.touch-selection button:backdrop:active, popover.background.magnifier 
button:backdrop:active, .app-notification button:backdrop:active, popover.background.touch-selection 
button:backdrop:checked, popover.background.magnifier button:backdrop:checked, .app-notification 
button:backdrop:checked, .osd notebook > header > tabs > arrow:active, .osd notebook > header > tabs > 
arrow:checked, .osd notebook > header > tabs > arrow:backdrop:active, .osd notebook > header > tabs > 
arrow:backdrop:checked, .osd
-    button:active, .osd
-    button:checked, .osd
-    button:backdrop:active, .osd
-    button:backdrop:checked {
+    .osd button.suggested-action:active, .osd button.suggested-action:checked, .osd 
button.suggested-action:backdrop:active, .osd button.suggested-action:backdrop:checked {
       color: white;
       border-color: rgba(0, 0, 0, 0.7);
-      background-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.7));
+      background-image: linear-gradient(to bottom, #4a90d9);
       background-clip: padding-box;
       box-shadow: none;
       text-shadow: none;
       -gtk-icon-shadow: none;
       outline-color: rgba(238, 238, 236, 0.3); }
-    popover.background.touch-selection button:disabled, popover.background.magnifier button:disabled, 
.app-notification button:disabled, popover.background.touch-selection button:backdrop:disabled, 
popover.background.magnifier button:backdrop:disabled, .app-notification button:backdrop:disabled, .osd 
notebook > header > tabs > arrow:disabled, .osd notebook > header > tabs > arrow:backdrop:disabled, .osd
-    button:disabled, .osd
-    button:backdrop:disabled {
+    .osd button.suggested-action:disabled, .osd button.suggested-action:backdrop:disabled {
       color: #878a89;
       border-color: rgba(0, 0, 0, 0.7);
       background-image: linear-gradient(to bottom, rgba(53, 57, 58, 0.5));
@@ -641,598 +823,186 @@ headerbar button.titlebutton,
       box-shadow: none;
       text-shadow: none;
       -gtk-icon-shadow: none; }
-    popover.background.touch-selection button:backdrop, popover.background.magnifier button:backdrop, 
.app-notification button:backdrop, .osd notebook > header > tabs > arrow:backdrop, .osd
-    button:backdrop {
+    .osd button.suggested-action:backdrop {
       color: #eeeeec;
       border-color: rgba(0, 0, 0, 0.7);
-      background-image: linear-gradient(to bottom, rgba(32, 37, 38, 0.8));
+      background-image: linear-gradient(to bottom, rgba(74, 144, 217, 0.5));
       background-clip: padding-box;
       box-shadow: none;
       text-shadow: none;
       -gtk-icon-shadow: none; }
-    popover.background.touch-selection button.flat, popover.background.touch-selection notebook > header > 
tabs > arrow, popover.background.touch-selection button.sidebar-button, popover.background.touch-selection 
headerbar button.titlebutton, headerbar popover.background.touch-selection button.titlebutton,
-    popover.background.touch-selection .titlebar button.titlebutton,
-    .titlebar popover.background.touch-selection button.titlebutton, popover.background.magnifier 
button.flat, popover.background.magnifier notebook > header > tabs > arrow, popover.background.magnifier 
button.sidebar-button, popover.background.magnifier headerbar button.titlebutton, headerbar 
popover.background.magnifier button.titlebutton,
-    popover.background.magnifier .titlebar button.titlebutton,
-    .titlebar popover.background.magnifier button.titlebutton, .csd popover.background.touch-selection 
notebook > header > tabs > arrow, .csd popover.background.magnifier notebook > header > tabs > arrow, 
.app-notification button.flat, .app-notification notebook > header > tabs > arrow, .app-notification 
button.sidebar-button, .app-notification headerbar button.titlebutton, headerbar .app-notification 
button.titlebutton,
-    .app-notification .titlebar button.titlebutton,
-    .titlebar .app-notification button.titlebutton,
-    .app-notification.frame notebook > header > tabs > arrow, .osd notebook > header > tabs > arrow.flat, 
.osd
-    button.flat, .osd notebook > header > tabs > arrow, .osd
-    button.sidebar-button, .osd headerbar button.titlebutton, headerbar .osd button.titlebutton,
-    .osd .titlebar button.titlebutton,
-    .titlebar .osd button.titlebutton {
-      border-color: transparent;
-      background-color: transparent;
-      background-image: none;
-      box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0);
-      text-shadow: none;
-      -gtk-icon-shadow: none;
-      box-shadow: none;
-      text-shadow: 0 1px black;
-      -gtk-icon-shadow: 0 1px black; }
-      popover.background.touch-selection button.flat:hover, popover.background.touch-selection notebook > 
header > tabs > arrow:hover, popover.background.touch-selection button.sidebar-button:hover, 
popover.background.touch-selection headerbar button.titlebutton:hover, headerbar 
popover.background.touch-selection button.titlebutton:hover,
-      popover.background.touch-selection .titlebar button.titlebutton:hover,
-      .titlebar popover.background.touch-selection button.titlebutton:hover, popover.background.magnifier 
button.flat:hover, popover.background.magnifier notebook > header > tabs > arrow:hover, 
popover.background.magnifier button.sidebar-button:hover, popover.background.magnifier headerbar 
button.titlebutton:hover, headerbar popover.background.magnifier button.titlebutton:hover,
-      popover.background.magnifier .titlebar button.titlebutton:hover,
-      .titlebar popover.background.magnifier button.titlebutton:hover, .app-notification button.flat:hover, 
.app-notification notebook > header > tabs > arrow:hover, .app-notification button.sidebar-button:hover, 
.app-notification headerbar button.titlebutton:hover, headerbar .app-notification button.titlebutton:hover,
-      .app-notification .titlebar button.titlebutton:hover,
-      .titlebar .app-notification button.titlebutton:hover, .osd notebook > header > tabs > 
arrow.flat:hover, .osd
-      button.flat:hover, .osd notebook > header > tabs > arrow:hover, .osd
-      button.sidebar-button:hover, .osd headerbar button.titlebutton:hover, headerbar .osd 
button.titlebutton:hover,
-      .osd .titlebar button.titlebutton:hover,
-      .titlebar .osd button.titlebutton:hover {
-        color: white;
-        border-color: rgba(0, 0, 0, 0.7);
-        background-image: linear-gradient(to bottom, rgba(60, 69, 71, 0.8));
-        background-clip: padding-box;
-        box-shadow: inset 0 1px rgba(255, 255, 255, 0.1);
-        text-shadow: 0 1px black;
-        -gtk-icon-shadow: 0 1px black;
-        outline-color: rgba(238, 238, 236, 0.3); }
-      popover.background.touch-selection button.flat:disabled, popover.background.touch-selection notebook > 
header > tabs > arrow:disabled, popover.background.touch-selection button.sidebar-button:disabled, 
popover.background.touch-selection headerbar button.titlebutton:disabled, headerbar 
popover.background.touch-selection button.titlebutton:disabled,
-      popover.background.touch-selection .titlebar button.titlebutton:disabled,
-      .titlebar popover.background.touch-selection button.titlebutton:disabled, popover.background.magnifier 
button.flat:disabled, popover.background.magnifier notebook > header > tabs > arrow:disabled, 
popover.background.magnifier button.sidebar-button:disabled, popover.background.magnifier headerbar 
button.titlebutton:disabled, headerbar popover.background.magnifier button.titlebutton:disabled,
-      popover.background.magnifier .titlebar button.titlebutton:disabled,
-      .titlebar popover.background.magnifier button.titlebutton:disabled, .app-notification 
button.flat:disabled, .app-notification notebook > header > tabs > arrow:disabled, .app-notification 
button.sidebar-button:disabled, .app-notification headerbar button.titlebutton:disabled, headerbar 
.app-notification button.titlebutton:disabled,
-      .app-notification .titlebar button.titlebutton:disabled,
-      .titlebar .app-notification button.titlebutton:disabled, .osd notebook > header > tabs > 
arrow.flat:disabled, .osd
-      button.flat:disabled, .osd notebook > header > tabs > arrow:disabled, .osd
-      button.sidebar-button:disabled, .osd headerbar button.titlebutton:disabled, headerbar .osd 
button.titlebutton:disabled,
-      .osd .titlebar button.titlebutton:disabled,
-      .titlebar .osd button.titlebutton:disabled {
-        color: #878a89;
-        border-color: rgba(0, 0, 0, 0.7);
-        background-image: linear-gradient(to bottom, rgba(53, 57, 58, 0.5));
-        background-clip: padding-box;
-        box-shadow: none;
-        text-shadow: none;
-        -gtk-icon-shadow: none;
-        background-image: none;
-        border-color: transparent;
-        box-shadow: none; }
-      popover.background.touch-selection button.flat:backdrop, popover.background.touch-selection notebook > 
header > tabs > arrow:backdrop, popover.background.touch-selection button.sidebar-button:backdrop, 
popover.background.touch-selection headerbar button.titlebutton:backdrop, headerbar 
popover.background.touch-selection button.titlebutton:backdrop,
-      popover.background.touch-selection .titlebar button.titlebutton:backdrop,
-      .titlebar popover.background.touch-selection button.titlebutton:backdrop, popover.background.magnifier 
button.flat:backdrop, popover.background.magnifier notebook > header > tabs > arrow:backdrop, 
popover.background.magnifier button.sidebar-button:backdrop, popover.background.magnifier headerbar 
button.titlebutton:backdrop, headerbar popover.background.magnifier button.titlebutton:backdrop,
-      popover.background.magnifier .titlebar button.titlebutton:backdrop,
-      .titlebar popover.background.magnifier button.titlebutton:backdrop, .app-notification 
button.flat:backdrop, .app-notification notebook > header > tabs > arrow:backdrop, .app-notification 
button.sidebar-button:backdrop, .app-notification headerbar button.titlebutton:backdrop, headerbar 
.app-notification button.titlebutton:backdrop,
-      .app-notification .titlebar button.titlebutton:backdrop,
-      .titlebar .app-notification button.titlebutton:backdrop, .osd notebook > header > tabs > 
arrow.flat:backdrop, .osd
-      button.flat:backdrop, .osd notebook > header > tabs > arrow:backdrop, .osd
-      button.sidebar-button:backdrop, .osd headerbar button.titlebutton:backdrop, headerbar .osd 
button.titlebutton:backdrop,
-      .osd .titlebar button.titlebutton:backdrop,
-      .titlebar .osd button.titlebutton:backdrop {
-        border-color: transparent;
-        background-color: transparent;
-        background-image: none;
-        box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0);
-        text-shadow: none;
-        -gtk-icon-shadow: none; }
-      popover.background.touch-selection button.flat:active, popover.background.touch-selection notebook > 
header > tabs > arrow:active, popover.background.touch-selection button.sidebar-button:active, 
popover.background.touch-selection headerbar button.titlebutton:active, headerbar 
popover.background.touch-selection button.titlebutton:active,
-      popover.background.touch-selection .titlebar button.titlebutton:active,
-      .titlebar popover.background.touch-selection button.titlebutton:active, popover.background.magnifier 
button.flat:active, popover.background.magnifier notebook > header > tabs > arrow:active, 
popover.background.magnifier button.sidebar-button:active, popover.background.magnifier headerbar 
button.titlebutton:active, headerbar popover.background.magnifier button.titlebutton:active,
-      popover.background.magnifier .titlebar button.titlebutton:active,
-      .titlebar popover.background.magnifier button.titlebutton:active, .app-notification 
button.flat:active, .app-notification notebook > header > tabs > arrow:active, .app-notification 
button.sidebar-button:active, .app-notification headerbar button.titlebutton:active, headerbar 
.app-notification button.titlebutton:active,
-      .app-notification .titlebar button.titlebutton:active,
-      .titlebar .app-notification button.titlebutton:active, popover.background.touch-selection 
button.flat:checked, popover.background.touch-selection notebook > header > tabs > arrow:checked, 
popover.background.touch-selection button.sidebar-button:checked, popover.background.touch-selection 
headerbar button.titlebutton:checked, headerbar popover.background.touch-selection button.titlebutton:checked,
-      popover.background.touch-selection .titlebar button.titlebutton:checked,
-      .titlebar popover.background.touch-selection button.titlebutton:checked, popover.background.magnifier 
button.flat:checked, popover.background.magnifier notebook > header > tabs > arrow:checked, 
popover.background.magnifier button.sidebar-button:checked, popover.background.magnifier headerbar 
button.titlebutton:checked, headerbar popover.background.magnifier button.titlebutton:checked,
-      popover.background.magnifier .titlebar button.titlebutton:checked,
-      .titlebar popover.background.magnifier button.titlebutton:checked, .app-notification 
button.flat:checked, .app-notification notebook > header > tabs > arrow:checked, .app-notification 
button.sidebar-button:checked, .app-notification headerbar button.titlebutton:checked, headerbar 
.app-notification button.titlebutton:checked,
-      .app-notification .titlebar button.titlebutton:checked,
-      .titlebar .app-notification button.titlebutton:checked, .osd notebook > header > tabs > 
arrow.flat:active, .osd notebook > header > tabs > arrow.flat:checked, .osd
-      button.flat:active, .osd notebook > header > tabs > arrow:active, .osd
-      button.sidebar-button:active, .osd headerbar button.titlebutton:active, headerbar .osd 
button.titlebutton:active,
-      .osd .titlebar button.titlebutton:active,
-      .titlebar .osd button.titlebutton:active, .osd
-      button.flat:checked, .osd notebook > header > tabs > arrow:checked, .osd
-      button.sidebar-button:checked, .osd headerbar button.titlebutton:checked, headerbar .osd 
button.titlebutton:checked,
-      .osd .titlebar button.titlebutton:checked,
-      .titlebar .osd button.titlebutton:checked {
-        color: white;
-        border-color: rgba(0, 0, 0, 0.7);
-        background-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.7));
-        background-clip: padding-box;
-        box-shadow: none;
-        text-shadow: none;
-        -gtk-icon-shadow: none;
-        outline-color: rgba(238, 238, 236, 0.3); }
-  notebook > header > tabs > arrow.suggested-action,
-  button.suggested-action,
-  headerbar button.suggested-action.titlebutton,
-  .titlebar button.suggested-action.titlebutton {
+button.destructive-action {
+  color: white;
+  outline-color: rgba(255, 255, 255, 0.3);
+  border-color: #8e0b0b;
+  background-image: linear-gradient(to bottom, #ef2929, #ee1616 60%, #d51010);
+  text-shadow: 0 -1px rgba(0, 0, 0, 0.56078);
+  -gtk-icon-shadow: 0 -1px rgba(0, 0, 0, 0.56078);
+  box-shadow: inset 0 1px rgba(255, 255, 255, 0.4), 0 1px rgba(255, 255, 255, 0); }
+  button.destructive-action.flat, notebook > header > tabs > arrow.destructive-action, 
button.destructive-action.sidebar-button, headerbar button.destructive-action.titlebutton,
+  .titlebar button.destructive-action.titlebutton {
+    border-color: transparent;
+    background-color: transparent;
+    background-image: none;
+    box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0);
+    text-shadow: none;
+    -gtk-icon-shadow: none;
+    color: #ef2929; }
+  button.destructive-action:hover {
     color: white;
     outline-color: rgba(255, 255, 255, 0.3);
-    border-color: #1c5187;
-    background-image: linear-gradient(to bottom, #4a90d9, #3986d5 60%, #2a76c6);
-    text-shadow: 0 -1px rgba(0, 0, 0, 0.54353);
-    -gtk-icon-shadow: 0 -1px rgba(0, 0, 0, 0.54353);
+    border-color: #8e0b0b;
+    /*
+    background-image: linear-gradient(to bottom,
+                                      lighten($c, 16%),
+                                      lighten($c, 6%) 40%,
+                                      lighten($c, 2%));
+    */
+    background-image: linear-gradient(to bottom, #f14545, #ef2929 60%, #ee1616);
+    text-shadow: 0 -1px rgba(0, 0, 0, 0.51278);
+    -gtk-icon-shadow: 0 -1px rgba(0, 0, 0, 0.51278);
     box-shadow: inset 0 1px rgba(255, 255, 255, 0.4), 0 1px rgba(255, 255, 255, 0); }
-    notebook > header > tabs > arrow.suggested-action.flat,
-    button.suggested-action.flat,
-    notebook > header > tabs > arrow.suggested-action,
-    button.suggested-action.sidebar-button,
-    headerbar button.suggested-action.titlebutton,
-    .titlebar button.suggested-action.titlebutton {
-      border-color: transparent;
-      background-color: transparent;
-      background-image: none;
-      box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0);
-      text-shadow: none;
-      -gtk-icon-shadow: none;
-      color: #4a90d9; }
-    notebook > header > tabs > arrow.suggested-action:hover,
-    button.suggested-action:hover {
-      color: white;
-      outline-color: rgba(255, 255, 255, 0.3);
-      border-color: #1c5187;
-      /*
-      background-image: linear-gradient(to bottom,
-                                        lighten($c, 16%),
-                                        lighten($c, 6%) 40%,
-                                        lighten($c, 2%));
-      */
-      background-image: linear-gradient(to bottom, #63a0de, #4a90d9 60%, #3986d5);
-      text-shadow: 0 -1px rgba(0, 0, 0, 0.49553);
-      -gtk-icon-shadow: 0 -1px rgba(0, 0, 0, 0.49553);
-      box-shadow: inset 0 1px rgba(255, 255, 255, 0.4), 0 1px rgba(255, 255, 255, 0); }
-    notebook > header > tabs > arrow.suggested-action:active, notebook > header > tabs > 
arrow.suggested-action:checked,
-    button.suggested-action:active,
-    button.suggested-action:checked {
-      color: white;
-      outline-color: rgba(255, 255, 255, 0.3);
-      border-color: #1c5187;
-      background-image: linear-gradient(to bottom, #276fba, #3583d5);
-      text-shadow: 0 -1px rgba(0, 0, 0, 0.62353);
-      -gtk-icon-shadow: 0 -1px rgba(0, 0, 0, 0.62353);
-      box-shadow: inset 0 2px 1px -2px rgba(0, 0, 0, 0.6), 0 1px rgba(255, 255, 255, 0); }
-    notebook > header > tabs > arrow.suggested-action:backdrop, notebook > header > tabs > 
arrow.suggested-action.flat:backdrop,
-    button.suggested-action:backdrop,
-    button.suggested-action.flat:backdrop,
-    notebook > header > tabs > arrow.suggested-action:backdrop,
-    button.suggested-action.sidebar-button:backdrop,
-    headerbar button.suggested-action.titlebutton:backdrop,
-    .titlebar button.suggested-action.titlebutton:backdrop {
-      color: #dbe9f7;
-      border-color: #4a90d9;
-      background-image: linear-gradient(to bottom, #4a90d9);
-      text-shadow: none;
-      -gtk-icon-shadow: none;
+  button.destructive-action:active, button.destructive-action:checked {
+    color: white;
+    outline-color: rgba(255, 255, 255, 0.3);
+    border-color: #8e0b0b;
+    background-image: linear-gradient(to bottom, #c70f0f, #ed1212);
+    text-shadow: 0 -1px rgba(0, 0, 0, 0.64078);
+    -gtk-icon-shadow: 0 -1px rgba(0, 0, 0, 0.64078);
+    box-shadow: inset 0 2px 1px -2px rgba(0, 0, 0, 0.6), 0 1px rgba(255, 255, 255, 0); }
+  button.destructive-action:backdrop, button.destructive-action.flat:backdrop, notebook > header > tabs > 
arrow.destructive-action:backdrop, button.destructive-action.sidebar-button:backdrop, headerbar 
button.destructive-action.titlebutton:backdrop,
+  .titlebar button.destructive-action.titlebutton:backdrop {
+    color: #fcd4d4;
+    border-color: #ef2929;
+    background-image: linear-gradient(to bottom, #ef2929);
+    text-shadow: none;
+    -gtk-icon-shadow: none;
+    box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0); }
+    button.destructive-action:backdrop:active, button.destructive-action:backdrop:checked, 
button.destructive-action.flat:backdrop:active, notebook > header > tabs > 
arrow.destructive-action:backdrop:active, button.destructive-action.sidebar-button:backdrop:active, headerbar 
button.destructive-action.titlebutton:backdrop:active,
+    .titlebar button.destructive-action.titlebutton:backdrop:active, 
button.destructive-action.flat:backdrop:checked, notebook > header > tabs > 
arrow.destructive-action:backdrop:checked, button.destructive-action.sidebar-button:backdrop:checked, 
headerbar button.destructive-action.titlebutton:backdrop:checked,
+    .titlebar button.destructive-action.titlebutton:backdrop:checked {
+      color: #f7cfcf;
+      border-color: #d51010;
+      background-image: linear-gradient(to bottom, #d51010);
       box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0); }
-      notebook > header > tabs > arrow.suggested-action:backdrop:active, notebook > header > tabs > 
arrow.suggested-action:backdrop:checked, notebook > header > tabs > 
arrow.suggested-action.flat:backdrop:active, notebook > header > tabs > 
arrow.suggested-action.flat:backdrop:checked,
-      button.suggested-action:backdrop:active,
-      button.suggested-action:backdrop:checked,
-      button.suggested-action.flat:backdrop:active,
-      notebook > header > tabs > arrow.suggested-action:backdrop:active,
-      button.suggested-action.sidebar-button:backdrop:active,
-      headerbar button.suggested-action.titlebutton:backdrop:active,
-      .titlebar button.suggested-action.titlebutton:backdrop:active,
-      button.suggested-action.flat:backdrop:checked,
-      notebook > header > tabs > arrow.suggested-action:backdrop:checked,
-      button.suggested-action.sidebar-button:backdrop:checked,
-      headerbar button.suggested-action.titlebutton:backdrop:checked,
-      .titlebar button.suggested-action.titlebutton:backdrop:checked {
-        color: #d4e4f4;
-        border-color: #2a76c6;
-        background-image: linear-gradient(to bottom, #2a76c6);
-        box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0); }
-      notebook > header > tabs > arrow.suggested-action:backdrop:disabled, notebook > header > tabs > 
arrow.suggested-action.flat:backdrop:disabled,
-      button.suggested-action:backdrop:disabled,
-      button.suggested-action.flat:backdrop:disabled,
-      notebook > header > tabs > arrow.suggested-action:backdrop:disabled,
-      button.suggested-action.sidebar-button:backdrop:disabled,
-      headerbar button.suggested-action.titlebutton:backdrop:disabled,
-      .titlebar button.suggested-action.titlebutton:backdrop:disabled {
-        color: #c3c3c0;
-        border-color: #a5a5a1;
-        background-image: linear-gradient(to bottom, #f1f1f1);
-        text-shadow: none;
-        -gtk-icon-shadow: none;
-        box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0); }
-        notebook > header > tabs > arrow.suggested-action:backdrop:disabled:active, notebook > header > tabs

arrow.suggested-action:backdrop:disabled:checked, notebook > header > tabs >

arrow.suggested-action.flat:backdrop:disabled:active, notebook > header > tabs > 
arrow.suggested-action.flat:backdrop:disabled:checked,
-        button.suggested-action:backdrop:disabled:active,
-        button.suggested-action:backdrop:disabled:checked,
-        button.suggested-action.flat:backdrop:disabled:active,
-        notebook > header > tabs > arrow.suggested-action:backdrop:disabled:active,
-        button.suggested-action.sidebar-button:backdrop:disabled:active,
-        headerbar button.suggested-action.titlebutton:backdrop:disabled:active,
-        .titlebar button.suggested-action.titlebutton:backdrop:disabled:active,
-        button.suggested-action.flat:backdrop:disabled:checked,
-        notebook > header > tabs > arrow.suggested-action:backdrop:disabled:checked,
-        button.suggested-action.sidebar-button:backdrop:disabled:checked,
-        headerbar button.suggested-action.titlebutton:backdrop:disabled:checked,
-        .titlebar button.suggested-action.titlebutton:backdrop:disabled:checked {
-          color: #8db9e8;
-          border-color: #5094db;
-          background-image: linear-gradient(to bottom, #5094db);
-          box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0); }
-    notebook > header > tabs > arrow.suggested-action.flat:backdrop, notebook > header > tabs > 
arrow.suggested-action.flat:disabled, notebook > header > tabs > 
arrow.suggested-action.flat:backdrop:disabled,
-    button.suggested-action.flat:backdrop,
-    notebook > header > tabs > arrow.suggested-action:backdrop,
-    button.suggested-action.sidebar-button:backdrop,
-    headerbar button.suggested-action.titlebutton:backdrop,
-    .titlebar button.suggested-action.titlebutton:backdrop,
-    button.suggested-action.flat:disabled,
-    notebook > header > tabs > arrow.suggested-action:disabled,
-    button.suggested-action.sidebar-button:disabled,
-    headerbar button.suggested-action.titlebutton:disabled,
-    .titlebar button.suggested-action.titlebutton:disabled,
-    button.suggested-action.flat:backdrop:disabled,
-    notebook > header > tabs > arrow.suggested-action:backdrop:disabled,
-    button.suggested-action.sidebar-button:backdrop:disabled,
-    headerbar button.suggested-action.titlebutton:backdrop:disabled,
-    .titlebar button.suggested-action.titlebutton:backdrop:disabled {
-      border-color: transparent;
-      background-color: transparent;
-      background-image: none;
-      box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0);
-      text-shadow: none;
-      -gtk-icon-shadow: none;
-      color: rgba(74, 144, 217, 0.8); }
-    notebook > header > tabs > arrow.suggested-action:disabled,
-    button.suggested-action:disabled {
-      color: #8b8e8f;
-      border-color: #9d9d99;
+    button.destructive-action:backdrop:disabled, button.destructive-action.flat:backdrop:disabled, notebook

header > tabs > arrow.destructive-action:backdrop:disabled,

button.destructive-action.sidebar-button:backdrop:disabled, headerbar 
button.destructive-action.titlebutton:backdrop:disabled,
+    .titlebar button.destructive-action.titlebutton:backdrop:disabled {
+      color: #c3c3c0;
+      border-color: #a5a5a1;
       background-image: linear-gradient(to bottom, #f1f1f1);
       text-shadow: none;
       -gtk-icon-shadow: none;
       box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0); }
-      notebook > header > tabs > arrow.suggested-action:disabled:active, notebook > header > tabs > 
arrow.suggested-action:disabled:checked,
-      button.suggested-action:disabled:active,
-      button.suggested-action:disabled:checked {
-        color: #b9d4f1;
-        border-color: #1c5187;
-        background-image: linear-gradient(to bottom, #4b8dd3, #5094db);
+      button.destructive-action:backdrop:disabled:active, 
button.destructive-action:backdrop:disabled:checked, button.destructive-action.flat:backdrop:disabled:active, 
notebook > header > tabs > arrow.destructive-action:backdrop:disabled:active, 
button.destructive-action.sidebar-button:backdrop:disabled:active, headerbar 
button.destructive-action.titlebutton:backdrop:disabled:active,
+      .titlebar button.destructive-action.titlebutton:backdrop:disabled:active, 
button.destructive-action.flat:backdrop:disabled:checked, notebook > header > tabs > 
arrow.destructive-action:backdrop:disabled:checked, 
button.destructive-action.sidebar-button:backdrop:disabled:checked, headerbar 
button.destructive-action.titlebutton:backdrop:disabled:checked,
+      .titlebar button.destructive-action.titlebutton:backdrop:disabled:checked {
+        color: #f57979;
+        border-color: #ef3131;
+        background-image: linear-gradient(to bottom, #ef3131);
         box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0); }
-    .osd notebook > header > tabs > arrow.suggested-action, .osd
-    button.suggested-action {
-      color: #eeeeec;
+  button.destructive-action.flat:backdrop, notebook > header > tabs > arrow.destructive-action:backdrop, 
button.destructive-action.sidebar-button:backdrop, headerbar button.destructive-action.titlebutton:backdrop,
+  .titlebar button.destructive-action.titlebutton:backdrop, button.destructive-action.flat:disabled, 
notebook > header > tabs > arrow.destructive-action:disabled, 
button.destructive-action.sidebar-button:disabled, headerbar button.destructive-action.titlebutton:disabled,
+  .titlebar button.destructive-action.titlebutton:disabled, 
button.destructive-action.flat:backdrop:disabled, notebook > header > tabs > 
arrow.destructive-action:backdrop:disabled, button.destructive-action.sidebar-button:backdrop:disabled, 
headerbar button.destructive-action.titlebutton:backdrop:disabled,
+  .titlebar button.destructive-action.titlebutton:backdrop:disabled {
+    border-color: transparent;
+    background-color: transparent;
+    background-image: none;
+    box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0);
+    text-shadow: none;
+    -gtk-icon-shadow: none;
+    color: rgba(239, 41, 41, 0.8); }
+  button.destructive-action:disabled {
+    color: #8b8e8f;
+    border-color: #9d9d99;
+    background-image: linear-gradient(to bottom, #f1f1f1);
+    text-shadow: none;
+    -gtk-icon-shadow: none;
+    box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0); }
+    button.destructive-action:disabled:active, button.destructive-action:disabled:checked {
+      color: #f9adad;
+      border-color: #8e0b0b;
+      background-image: linear-gradient(to bottom, #e52d2d, #ef3131);
+      box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0); }
+  .osd button.destructive-action {
+    color: #eeeeec;
+    border-color: rgba(0, 0, 0, 0.7);
+    background-image: linear-gradient(to bottom, rgba(239, 41, 41, 0.5));
+    background-clip: padding-box;
+    box-shadow: inset 0 1px rgba(255, 255, 255, 0.1);
+    text-shadow: 0 1px black;
+    -gtk-icon-shadow: 0 1px black;
+    outline-color: rgba(238, 238, 236, 0.3); }
+    .osd button.destructive-action:hover {
+      color: white;
       border-color: rgba(0, 0, 0, 0.7);
-      background-image: linear-gradient(to bottom, rgba(74, 144, 217, 0.5));
+      background-image: linear-gradient(to bottom, rgba(239, 41, 41, 0.7));
       background-clip: padding-box;
       box-shadow: inset 0 1px rgba(255, 255, 255, 0.1);
       text-shadow: 0 1px black;
       -gtk-icon-shadow: 0 1px black;
       outline-color: rgba(238, 238, 236, 0.3); }
-      .osd notebook > header > tabs > arrow.suggested-action:hover, .osd
-      button.suggested-action:hover {
-        color: white;
-        border-color: rgba(0, 0, 0, 0.7);
-        background-image: linear-gradient(to bottom, rgba(74, 144, 217, 0.7));
-        background-clip: padding-box;
-        box-shadow: inset 0 1px rgba(255, 255, 255, 0.1);
-        text-shadow: 0 1px black;
-        -gtk-icon-shadow: 0 1px black;
-        outline-color: rgba(238, 238, 236, 0.3); }
-      .osd notebook > header > tabs > arrow.suggested-action:active, .osd notebook > header > tabs > 
arrow.suggested-action:checked, .osd notebook > header > tabs > arrow.suggested-action:backdrop:active, .osd 
notebook > header > tabs > arrow.suggested-action:backdrop:checked, .osd
-      button.suggested-action:active, .osd
-      button.suggested-action:checked, .osd
-      button.suggested-action:backdrop:active, .osd
-      button.suggested-action:backdrop:checked {
-        color: white;
-        border-color: rgba(0, 0, 0, 0.7);
-        background-image: linear-gradient(to bottom, #4a90d9);
-        background-clip: padding-box;
-        box-shadow: none;
-        text-shadow: none;
-        -gtk-icon-shadow: none;
-        outline-color: rgba(238, 238, 236, 0.3); }
-      .osd notebook > header > tabs > arrow.suggested-action:disabled, .osd notebook > header > tabs > 
arrow.suggested-action:backdrop:disabled, .osd
-      button.suggested-action:disabled, .osd
-      button.suggested-action:backdrop:disabled {
-        color: #878a89;
-        border-color: rgba(0, 0, 0, 0.7);
-        background-image: linear-gradient(to bottom, rgba(53, 57, 58, 0.5));
-        background-clip: padding-box;
-        box-shadow: none;
-        text-shadow: none;
-        -gtk-icon-shadow: none; }
-      .osd notebook > header > tabs > arrow.suggested-action:backdrop, .osd
-      button.suggested-action:backdrop {
-        color: #eeeeec;
-        border-color: rgba(0, 0, 0, 0.7);
-        background-image: linear-gradient(to bottom, rgba(74, 144, 217, 0.5));
-        background-clip: padding-box;
-        box-shadow: none;
-        text-shadow: none;
-        -gtk-icon-shadow: none; }
-  notebook > header > tabs > arrow.destructive-action,
-  button.destructive-action,
-  headerbar button.destructive-action.titlebutton,
-  .titlebar button.destructive-action.titlebutton {
-    color: white;
-    outline-color: rgba(255, 255, 255, 0.3);
-    border-color: #8e0b0b;
-    background-image: linear-gradient(to bottom, #ef2929, #ee1616 60%, #d51010);
-    text-shadow: 0 -1px rgba(0, 0, 0, 0.56078);
-    -gtk-icon-shadow: 0 -1px rgba(0, 0, 0, 0.56078);
-    box-shadow: inset 0 1px rgba(255, 255, 255, 0.4), 0 1px rgba(255, 255, 255, 0); }
-    notebook > header > tabs > arrow.destructive-action.flat,
-    button.destructive-action.flat,
-    notebook > header > tabs > arrow.destructive-action,
-    button.destructive-action.sidebar-button,
-    headerbar button.destructive-action.titlebutton,
-    .titlebar button.destructive-action.titlebutton {
-      border-color: transparent;
-      background-color: transparent;
-      background-image: none;
-      box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0);
-      text-shadow: none;
-      -gtk-icon-shadow: none;
-      color: #ef2929; }
-    notebook > header > tabs > arrow.destructive-action:hover,
-    button.destructive-action:hover {
-      color: white;
-      outline-color: rgba(255, 255, 255, 0.3);
-      border-color: #8e0b0b;
-      /*
-      background-image: linear-gradient(to bottom,
-                                        lighten($c, 16%),
-                                        lighten($c, 6%) 40%,
-                                        lighten($c, 2%));
-      */
-      background-image: linear-gradient(to bottom, #f14545, #ef2929 60%, #ee1616);
-      text-shadow: 0 -1px rgba(0, 0, 0, 0.51278);
-      -gtk-icon-shadow: 0 -1px rgba(0, 0, 0, 0.51278);
-      box-shadow: inset 0 1px rgba(255, 255, 255, 0.4), 0 1px rgba(255, 255, 255, 0); }
-    notebook > header > tabs > arrow.destructive-action:active, notebook > header > tabs > 
arrow.destructive-action:checked,
-    button.destructive-action:active,
-    button.destructive-action:checked {
+    .osd button.destructive-action:active, .osd button.destructive-action:checked, .osd 
button.destructive-action:backdrop:active, .osd button.destructive-action:backdrop:checked {
       color: white;
-      outline-color: rgba(255, 255, 255, 0.3);
-      border-color: #8e0b0b;
-      background-image: linear-gradient(to bottom, #c70f0f, #ed1212);
-      text-shadow: 0 -1px rgba(0, 0, 0, 0.64078);
-      -gtk-icon-shadow: 0 -1px rgba(0, 0, 0, 0.64078);
-      box-shadow: inset 0 2px 1px -2px rgba(0, 0, 0, 0.6), 0 1px rgba(255, 255, 255, 0); }
-    notebook > header > tabs > arrow.destructive-action:backdrop, notebook > header > tabs > 
arrow.destructive-action.flat:backdrop,
-    button.destructive-action:backdrop,
-    button.destructive-action.flat:backdrop,
-    notebook > header > tabs > arrow.destructive-action:backdrop,
-    button.destructive-action.sidebar-button:backdrop,
-    headerbar button.destructive-action.titlebutton:backdrop,
-    .titlebar button.destructive-action.titlebutton:backdrop {
-      color: #fcd4d4;
-      border-color: #ef2929;
+      border-color: rgba(0, 0, 0, 0.7);
       background-image: linear-gradient(to bottom, #ef2929);
+      background-clip: padding-box;
+      box-shadow: none;
       text-shadow: none;
       -gtk-icon-shadow: none;
-      box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0); }
-      notebook > header > tabs > arrow.destructive-action:backdrop:active, notebook > header > tabs > 
arrow.destructive-action:backdrop:checked, notebook > header > tabs > 
arrow.destructive-action.flat:backdrop:active, notebook > header > tabs > 
arrow.destructive-action.flat:backdrop:checked,
-      button.destructive-action:backdrop:active,
-      button.destructive-action:backdrop:checked,
-      button.destructive-action.flat:backdrop:active,
-      notebook > header > tabs > arrow.destructive-action:backdrop:active,
-      button.destructive-action.sidebar-button:backdrop:active,
-      headerbar button.destructive-action.titlebutton:backdrop:active,
-      .titlebar button.destructive-action.titlebutton:backdrop:active,
-      button.destructive-action.flat:backdrop:checked,
-      notebook > header > tabs > arrow.destructive-action:backdrop:checked,
-      button.destructive-action.sidebar-button:backdrop:checked,
-      headerbar button.destructive-action.titlebutton:backdrop:checked,
-      .titlebar button.destructive-action.titlebutton:backdrop:checked {
-        color: #f7cfcf;
-        border-color: #d51010;
-        background-image: linear-gradient(to bottom, #d51010);
-        box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0); }
-      notebook > header > tabs > arrow.destructive-action:backdrop:disabled, notebook > header > tabs > 
arrow.destructive-action.flat:backdrop:disabled,
-      button.destructive-action:backdrop:disabled,
-      button.destructive-action.flat:backdrop:disabled,
-      notebook > header > tabs > arrow.destructive-action:backdrop:disabled,
-      button.destructive-action.sidebar-button:backdrop:disabled,
-      headerbar button.destructive-action.titlebutton:backdrop:disabled,
-      .titlebar button.destructive-action.titlebutton:backdrop:disabled {
-        color: #c3c3c0;
-        border-color: #a5a5a1;
-        background-image: linear-gradient(to bottom, #f1f1f1);
-        text-shadow: none;
-        -gtk-icon-shadow: none;
-        box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0); }
-        notebook > header > tabs > arrow.destructive-action:backdrop:disabled:active, notebook > header > 
tabs > arrow.destructive-action:backdrop:disabled:checked, notebook > header > tabs > 
arrow.destructive-action.flat:backdrop:disabled:active, notebook > header > tabs > 
arrow.destructive-action.flat:backdrop:disabled:checked,
-        button.destructive-action:backdrop:disabled:active,
-        button.destructive-action:backdrop:disabled:checked,
-        button.destructive-action.flat:backdrop:disabled:active,
-        notebook > header > tabs > arrow.destructive-action:backdrop:disabled:active,
-        button.destructive-action.sidebar-button:backdrop:disabled:active,
-        headerbar button.destructive-action.titlebutton:backdrop:disabled:active,
-        .titlebar button.destructive-action.titlebutton:backdrop:disabled:active,
-        button.destructive-action.flat:backdrop:disabled:checked,
-        notebook > header > tabs > arrow.destructive-action:backdrop:disabled:checked,
-        button.destructive-action.sidebar-button:backdrop:disabled:checked,
-        headerbar button.destructive-action.titlebutton:backdrop:disabled:checked,
-        .titlebar button.destructive-action.titlebutton:backdrop:disabled:checked {
-          color: #f57979;
-          border-color: #ef3131;
-          background-image: linear-gradient(to bottom, #ef3131);
-          box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0); }
-    notebook > header > tabs > arrow.destructive-action.flat:backdrop, notebook > header > tabs > 
arrow.destructive-action.flat:disabled, notebook > header > tabs > 
arrow.destructive-action.flat:backdrop:disabled,
-    button.destructive-action.flat:backdrop,
-    notebook > header > tabs > arrow.destructive-action:backdrop,
-    button.destructive-action.sidebar-button:backdrop,
-    headerbar button.destructive-action.titlebutton:backdrop,
-    .titlebar button.destructive-action.titlebutton:backdrop,
-    button.destructive-action.flat:disabled,
-    notebook > header > tabs > arrow.destructive-action:disabled,
-    button.destructive-action.sidebar-button:disabled,
-    headerbar button.destructive-action.titlebutton:disabled,
-    .titlebar button.destructive-action.titlebutton:disabled,
-    button.destructive-action.flat:backdrop:disabled,
-    notebook > header > tabs > arrow.destructive-action:backdrop:disabled,
-    button.destructive-action.sidebar-button:backdrop:disabled,
-    headerbar button.destructive-action.titlebutton:backdrop:disabled,
-    .titlebar button.destructive-action.titlebutton:backdrop:disabled {
-      border-color: transparent;
-      background-color: transparent;
-      background-image: none;
-      box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0);
-      text-shadow: none;
-      -gtk-icon-shadow: none;
-      color: rgba(239, 41, 41, 0.8); }
-    notebook > header > tabs > arrow.destructive-action:disabled,
-    button.destructive-action:disabled {
-      color: #8b8e8f;
-      border-color: #9d9d99;
-      background-image: linear-gradient(to bottom, #f1f1f1);
+      outline-color: rgba(238, 238, 236, 0.3); }
+    .osd button.destructive-action:disabled, .osd button.destructive-action:backdrop:disabled {
+      color: #878a89;
+      border-color: rgba(0, 0, 0, 0.7);
+      background-image: linear-gradient(to bottom, rgba(53, 57, 58, 0.5));
+      background-clip: padding-box;
+      box-shadow: none;
       text-shadow: none;
-      -gtk-icon-shadow: none;
-      box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0); }
-      notebook > header > tabs > arrow.destructive-action:disabled:active, notebook > header > tabs > 
arrow.destructive-action:disabled:checked,
-      button.destructive-action:disabled:active,
-      button.destructive-action:disabled:checked {
-        color: #f9adad;
-        border-color: #8e0b0b;
-        background-image: linear-gradient(to bottom, #e52d2d, #ef3131);
-        box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0); }
-    .osd notebook > header > tabs > arrow.destructive-action, .osd
-    button.destructive-action {
+      -gtk-icon-shadow: none; }
+    .osd button.destructive-action:backdrop {
       color: #eeeeec;
       border-color: rgba(0, 0, 0, 0.7);
       background-image: linear-gradient(to bottom, rgba(239, 41, 41, 0.5));
       background-clip: padding-box;
-      box-shadow: inset 0 1px rgba(255, 255, 255, 0.1);
-      text-shadow: 0 1px black;
-      -gtk-icon-shadow: 0 1px black;
-      outline-color: rgba(238, 238, 236, 0.3); }
-      .osd notebook > header > tabs > arrow.destructive-action:hover, .osd
-      button.destructive-action:hover {
-        color: white;
-        border-color: rgba(0, 0, 0, 0.7);
-        background-image: linear-gradient(to bottom, rgba(239, 41, 41, 0.7));
-        background-clip: padding-box;
-        box-shadow: inset 0 1px rgba(255, 255, 255, 0.1);
-        text-shadow: 0 1px black;
-        -gtk-icon-shadow: 0 1px black;
-        outline-color: rgba(238, 238, 236, 0.3); }
-      .osd notebook > header > tabs > arrow.destructive-action:active, .osd notebook > header > tabs > 
arrow.destructive-action:checked, .osd notebook > header > tabs > arrow.destructive-action:backdrop:active, 
.osd notebook > header > tabs > arrow.destructive-action:backdrop:checked, .osd
-      button.destructive-action:active, .osd
-      button.destructive-action:checked, .osd
-      button.destructive-action:backdrop:active, .osd
-      button.destructive-action:backdrop:checked {
-        color: white;
-        border-color: rgba(0, 0, 0, 0.7);
-        background-image: linear-gradient(to bottom, #ef2929);
-        background-clip: padding-box;
-        box-shadow: none;
-        text-shadow: none;
-        -gtk-icon-shadow: none;
-        outline-color: rgba(238, 238, 236, 0.3); }
-      .osd notebook > header > tabs > arrow.destructive-action:disabled, .osd notebook > header > tabs > 
arrow.destructive-action:backdrop:disabled, .osd
-      button.destructive-action:disabled, .osd
-      button.destructive-action:backdrop:disabled {
-        color: #878a89;
-        border-color: rgba(0, 0, 0, 0.7);
-        background-image: linear-gradient(to bottom, rgba(53, 57, 58, 0.5));
-        background-clip: padding-box;
-        box-shadow: none;
-        text-shadow: none;
-        -gtk-icon-shadow: none; }
-      .osd notebook > header > tabs > arrow.destructive-action:backdrop, .osd
-      button.destructive-action:backdrop {
-        color: #eeeeec;
-        border-color: rgba(0, 0, 0, 0.7);
-        background-image: linear-gradient(to bottom, rgba(239, 41, 41, 0.5));
-        background-clip: padding-box;
-        box-shadow: none;
-        text-shadow: none;
-        -gtk-icon-shadow: none; }
-  notebook > header > tabs > arrow.text-button,
-  button.text-button,
-  headerbar button.text-button.titlebutton,
-  .titlebar button.text-button.titlebutton {
-    padding-left: 16px;
-    padding-right: 16px; }
-  notebook > header > tabs > arrow.text-button.image-button label:first-child,
-  button.text-button.image-button label:first-child {
-    padding-left: 8px; }
-  notebook > header > tabs > arrow.text-button.image-button label:last-child,
-  button.text-button.image-button label:last-child {
-    padding-right: 8px; }
-  notebook > header > tabs.stack-switcher > arrow, .stack-switcher >
-  button, headerbar .stack-switcher > button.titlebutton,
-  .titlebar .stack-switcher > button.titlebutton {
-    outline-offset: -3px; }
-    notebook > header > tabs.stack-switcher > arrow > label, .stack-switcher >
-    button > label,
-    .titlebar .stack-switcher > button.titlebutton > label {
-      padding-left: 6px;
-      padding-right: 6px; }
-    notebook > header > tabs.stack-switcher > arrow > image, .stack-switcher >
-    button > image,
-    .titlebar .stack-switcher > button.titlebutton > image {
-      padding-left: 6px;
-      padding-right: 6px;
-      padding-top: 3px;
-      padding-bottom: 3px; }
-    notebook > header > tabs.stack-switcher > arrow.text-button, .stack-switcher >
-    button.text-button, headerbar .stack-switcher > button.text-button.titlebutton,
-    .titlebar .stack-switcher > button.text-button.titlebutton {
-      padding-left: 10px;
-      padding-right: 10px; }
-    notebook > header > tabs.stack-switcher > arrow.image-button, .stack-switcher >
-    button.image-button, headerbar .stack-switcher > button.image-button.titlebutton,
-    .titlebar .stack-switcher > button.image-button.titlebutton {
-      padding-left: 2px;
-      padding-right: 2px; }
-    notebook > header > tabs.stack-switcher > arrow.needs-attention:active > label, notebook > header > 
tabs.stack-switcher > arrow.needs-attention:active > image, notebook > header > tabs.stack-switcher > 
arrow.needs-attention:checked > label, notebook > header > tabs.stack-switcher > 
arrow.needs-attention:checked > image, .stack-switcher >
-    button.needs-attention:active > label, .stack-switcher >
-    button.needs-attention:active > image, .stack-switcher >
-    button.needs-attention:checked > label, .stack-switcher >
-    button.needs-attention:checked > image {
-      animation: none;
-      background-image: none; }
-  .inline-toolbar notebook > header > tabs > arrow, .inline-toolbar notebook > header > tabs > 
arrow:backdrop, .inline-toolbar
-  button, .inline-toolbar headerbar button.titlebutton, headerbar .inline-toolbar button.titlebutton,
-  .inline-toolbar .titlebar button.titlebutton,
-  .titlebar .inline-toolbar button.titlebutton, .inline-toolbar
-  button:backdrop {
-    border-radius: 2px;
-    border-width: 1px; }
-  .primary-toolbar notebook > header > tabs > arrow, .primary-toolbar
-  button, .primary-toolbar headerbar button.titlebutton, headerbar .primary-toolbar button.titlebutton,
-  .primary-toolbar .titlebar button.titlebutton,
-  .titlebar .primary-toolbar button.titlebutton {
-    -gtk-icon-shadow: none; }
+      box-shadow: none;
+      text-shadow: none;
+      -gtk-icon-shadow: none; }
+.stack-switcher > button {
+  outline-offset: -3px; }
+  .stack-switcher > button > label {
+    padding-left: 6px;
+    padding-right: 6px; }
+  .stack-switcher > button > image {
+    padding-left: 6px;
+    padding-right: 6px;
+    padding-top: 3px;
+    padding-bottom: 3px; }
+  .stack-switcher > button.text-button {
+    padding-left: 10px;
+    padding-right: 10px; }
+  .stack-switcher > button.image-button {
+    padding-left: 2px;
+    padding-right: 2px; }
+  .stack-switcher > button.needs-attention:active > label, .stack-switcher > button.needs-attention:active > 
image, .stack-switcher > button.needs-attention:checked > label, .stack-switcher > 
button.needs-attention:checked > image {
+    animation: none;
+    background-image: none; }
+.inline-toolbar button, .inline-toolbar button:backdrop {
+  border-radius: 2px;
+  border-width: 1px; }
+.primary-toolbar button {
+  -gtk-icon-shadow: none; }
 
-notebook > header > tabs.stack-switcher > arrow.needs-attention > label, notebook > header > 
tabs.stack-switcher > arrow.needs-attention > image, .stack-switcher >
-button.needs-attention > label, .stack-switcher >
-button.needs-attention > image, stacksidebar row.needs-attention > label {
+.stack-switcher > button.needs-attention > label, .stack-switcher > button.needs-attention > image, 
stacksidebar row.needs-attention > label {
   animation: needs_attention 150ms ease-in;
   background-image: -gtk-gradient(radial, center center, 0, center center, 0.5, to(#4a90d9), 
to(transparent)), -gtk-gradient(radial, center center, 0, center center, 0.5, to(rgba(255, 255, 255, 
0.76923)), to(transparent));
   background-size: 6px 6px, 6px 6px;
   background-repeat: no-repeat;
   background-position: right 3px, right 4px; }
-  notebook > header > tabs.stack-switcher > arrow.needs-attention > label:backdrop, notebook > header > 
tabs.stack-switcher > arrow.needs-attention > image:backdrop, .stack-switcher >
-  button.needs-attention > label:backdrop, .stack-switcher >
-  button.needs-attention > image:backdrop, stacksidebar row.needs-attention > label:backdrop {
+  .stack-switcher > button.needs-attention > label:backdrop, .stack-switcher > button.needs-attention > 
image:backdrop, stacksidebar row.needs-attention > label:backdrop {
     background-size: 6px 6px, 0 0; }
-  notebook > header > tabs.stack-switcher > arrow.needs-attention > label:dir(rtl), notebook > header > 
tabs.stack-switcher > arrow.needs-attention > image:dir(rtl), .stack-switcher >
-  button.needs-attention > label:dir(rtl), .stack-switcher >
-  button.needs-attention > image:dir(rtl), stacksidebar row.needs-attention > label:dir(rtl) {
+  .stack-switcher > button.needs-attention > label:dir(rtl), .stack-switcher > button.needs-attention > 
image:dir(rtl), stacksidebar row.needs-attention > label:dir(rtl) {
     background-position: left 3px, left 4px; }
 
-.inline-toolbar toolbutton > button, .inline-toolbar headerbar toolbutton > button.titlebutton,
-.inline-toolbar .titlebar toolbutton > button.titlebutton,
-.titlebar .inline-toolbar toolbutton > button.titlebutton {
+.inline-toolbar toolbutton > button {
   color: #2e3436;
   outline-color: rgba(46, 52, 54, 0.3);
   border-color: #9d9d99;
@@ -1240,8 +1010,7 @@ button.needs-attention > image, stacksidebar row.needs-attention > label {
   text-shadow: 0 1px rgba(255, 255, 255, 0.76923);
   -gtk-icon-shadow: 0 1px rgba(255, 255, 255, 0.76923);
   box-shadow: inset 0 1px rgba(255, 255, 255, 0.8), 0 1px rgba(255, 255, 255, 0); }
-  .inline-toolbar toolbutton > button:hover, .inline-toolbar headerbar toolbutton > button.titlebutton:hover,
-  .inline-toolbar .titlebar toolbutton > button.titlebutton:hover {
+  .inline-toolbar toolbutton > button:hover {
     color: #2e3436;
     outline-color: rgba(46, 52, 54, 0.3);
     border-color: #9d9d99;
@@ -1255,9 +1024,7 @@ button.needs-attention > image, stacksidebar row.needs-attention > label {
     text-shadow: 0 1px rgba(255, 255, 255, 0.76923);
     -gtk-icon-shadow: 0 1px rgba(255, 255, 255, 0.76923);
     box-shadow: inset 0 1px white, 0 1px rgba(255, 255, 255, 0); }
-  .inline-toolbar toolbutton > button:active, .inline-toolbar headerbar toolbutton > 
button.titlebutton:active,
-  .inline-toolbar .titlebar toolbutton > button.titlebutton:active, .inline-toolbar toolbutton > 
button:checked, .inline-toolbar headerbar toolbutton > button.titlebutton:checked,
-  .inline-toolbar .titlebar toolbutton > button.titlebutton:checked {
+  .inline-toolbar toolbutton > button:active, .inline-toolbar toolbutton > button:checked {
     color: #2e3436;
     outline-color: rgba(46, 52, 54, 0.3);
     border-color: #9d9d99;
@@ -1265,47 +1032,38 @@ button.needs-attention > image, stacksidebar row.needs-attention > label {
     text-shadow: 0 1px rgba(255, 255, 255, 0.76923);
     -gtk-icon-shadow: 0 1px rgba(255, 255, 255, 0.76923);
     box-shadow: inset 0 2px 1px -2px rgba(0, 0, 0, 0.6), 0 1px rgba(255, 255, 255, 0); }
-  .inline-toolbar toolbutton > button:disabled, .inline-toolbar headerbar toolbutton > 
button.titlebutton:disabled,
-  .inline-toolbar .titlebar toolbutton > button.titlebutton:disabled {
+  .inline-toolbar toolbutton > button:disabled {
     color: #8b8e8f;
     border-color: #9d9d99;
     background-image: linear-gradient(to bottom, #f1f1f1);
     text-shadow: none;
     -gtk-icon-shadow: none;
     box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0); }
-  .inline-toolbar toolbutton > button:disabled:active, .inline-toolbar headerbar toolbutton > 
button.titlebutton:disabled:active,
-  .inline-toolbar .titlebar toolbutton > button.titlebutton:disabled:active, .inline-toolbar toolbutton > 
button:disabled:checked, .inline-toolbar headerbar toolbutton > button.titlebutton:disabled:checked,
-  .inline-toolbar .titlebar toolbutton > button.titlebutton:disabled:checked {
+  .inline-toolbar toolbutton > button:disabled:active, .inline-toolbar toolbutton > button:disabled:checked {
     color: #8b8e8f;
     border-color: #9d9d99;
     background-image: linear-gradient(to bottom, #e9e9e8, #f1f1f1);
     box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0); }
-  .inline-toolbar toolbutton > button:backdrop, .inline-toolbar headerbar toolbutton > 
button.titlebutton:backdrop,
-  .inline-toolbar .titlebar toolbutton > button.titlebutton:backdrop {
+  .inline-toolbar toolbutton > button:backdrop {
     color: #8b8e8f;
     border-color: #a5a5a1;
     background-image: linear-gradient(to bottom, #e8e8e7);
     text-shadow: none;
     -gtk-icon-shadow: none;
     box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0); }
-  .inline-toolbar toolbutton > button:backdrop:active, .inline-toolbar headerbar toolbutton > 
button.titlebutton:backdrop:active,
-  .inline-toolbar .titlebar toolbutton > button.titlebutton:backdrop:active, .inline-toolbar toolbutton > 
button:backdrop:checked, .inline-toolbar headerbar toolbutton > button.titlebutton:backdrop:checked,
-  .inline-toolbar .titlebar toolbutton > button.titlebutton:backdrop:checked {
+  .inline-toolbar toolbutton > button:backdrop:active, .inline-toolbar toolbutton > button:backdrop:checked {
     color: #8b8e8f;
     border-color: #a5a5a1;
     background-image: linear-gradient(to bottom, #d1d1cf);
     box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0); }
-  .inline-toolbar toolbutton > button:backdrop:disabled, .inline-toolbar headerbar toolbutton > 
button.titlebutton:backdrop:disabled,
-  .inline-toolbar .titlebar toolbutton > button.titlebutton:backdrop:disabled {
+  .inline-toolbar toolbutton > button:backdrop:disabled {
     color: #c3c3c0;
     border-color: #a5a5a1;
     background-image: linear-gradient(to bottom, #f1f1f1);
     text-shadow: none;
     -gtk-icon-shadow: none;
     box-shadow: inset 0 1px rgba(255, 255, 255, 0), 0 1px rgba(255, 255, 255, 0); }
-  .inline-toolbar toolbutton > button:backdrop:disabled:active, .inline-toolbar headerbar toolbutton > 
button.titlebutton:backdrop:disabled:active,
-  .inline-toolbar .titlebar toolbutton > button.titlebutton:backdrop:disabled:active, .inline-toolbar 
toolbutton > button:backdrop:disabled:checked, .inline-toolbar headerbar toolbutton > 
button.titlebutton:backdrop:disabled:checked,
-  .inline-toolbar .titlebar toolbutton > button.titlebutton:backdrop:disabled:checked {
+  .inline-toolbar toolbutton > button:backdrop:disabled:active, .inline-toolbar toolbutton > 
button:backdrop:disabled:checked {
     color: #c3c3c0;
     border-color: #a5a5a1;
     background-image: linear-gradient(to bottom, #e4e4e4);
@@ -1314,6 +1072,8 @@ button.needs-attention > image, stacksidebar row.needs-attention > label {
 toolbar.inline-toolbar toolbutton > button.flat, .inline-toolbar toolbutton > button.flat, 
searchbar.inline-toolbar toolbutton > button.flat,
 .inline-toolbar.location-bar toolbutton > button.flat, toolbar.inline-toolbar toolbutton > 
button.sidebar-button, .inline-toolbar toolbutton > button.sidebar-button, searchbar.inline-toolbar 
toolbutton > button.sidebar-button,
 .inline-toolbar.location-bar toolbutton > button.sidebar-button, .inline-toolbar headerbar toolbutton > 
button.titlebutton, headerbar .inline-toolbar toolbutton > button.titlebutton,
+.inline-toolbar .titlebar toolbutton > button.titlebutton,
+.titlebar .inline-toolbar toolbutton > button.titlebutton,
 toolbar.inline-toolbar toolbutton:backdrop > button.flat,
 .inline-toolbar toolbutton:backdrop > button.flat,
 searchbar.inline-toolbar toolbutton:backdrop > button.flat,
@@ -1325,24 +1085,11 @@ searchbar.inline-toolbar toolbutton:backdrop > button.sidebar-button,
 .inline-toolbar headerbar toolbutton:backdrop > button.titlebutton,
 headerbar .inline-toolbar toolbutton:backdrop > button.titlebutton,
 .inline-toolbar .titlebar toolbutton:backdrop > button.titlebutton,
-.titlebar .inline-toolbar toolbutton:backdrop > button.titlebutton, .linked:not(.vertical) > entry, 
.linked:not(.vertical) > spinbutton:not(.vertical), .inline-toolbar notebook > header > tabs > arrow, 
.inline-toolbar notebook > header > tabs > arrow:backdrop, .inline-toolbar
-button, .inline-toolbar headerbar button.titlebutton, headerbar .inline-toolbar button.titlebutton,
-.inline-toolbar .titlebar button.titlebutton,
-.titlebar .inline-toolbar button.titlebutton, .inline-toolbar
-button:backdrop, notebook > header > tabs.linked > arrow, notebook > header > tabs.linked > arrow:hover, 
notebook > header > tabs.linked > arrow:active, notebook > header > tabs.linked > arrow:checked, notebook > 
header > tabs.linked > arrow:backdrop, .linked >
-button, headerbar .linked > button.titlebutton,
-.titlebar .linked > button.titlebutton, .linked >
-button:hover, .linked >
-button:active, .linked >
-button:checked, .linked >
-button:backdrop, .linked > combobox > button.combo:dir(ltr), .linked > combobox > button.combo:dir(rtl) {
+.titlebar .inline-toolbar toolbutton:backdrop > button.titlebutton, .linked:not(.vertical) > entry, 
.linked:not(.vertical) > spinbutton:not(.vertical), .inline-toolbar button, .inline-toolbar button:backdrop, 
.linked > button, .linked > button:hover, .linked > button:active, .linked > button:checked, .linked > 
button:backdrop, .linked > combobox > button.combo:dir(ltr), .linked > combobox > button.combo:dir(rtl) {
   border-radius: 0;
   border-right-style: none; }
 
-.linked:not(.vertical) > entry:first-child, .linked:not(.vertical) > spinbutton:first-child:not(.vertical), 
.inline-toolbar notebook > header > tabs > arrow:first-child, .inline-toolbar notebook > header > tabs > 
arrow:first-child:backdrop, .inline-toolbar
-button:first-child, notebook > header > tabs.linked > arrow:first-child, notebook > header > tabs.linked > 
arrow:first-child:hover, notebook > header > tabs.linked > arrow:first-child:active, notebook > header > 
tabs.linked > arrow:first-child:checked, notebook > header > tabs.linked > arrow:first-child:backdrop, 
.linked >
-button:first-child, headerbar .linked > button.titlebutton:first-child,
-.titlebar .linked > button.titlebutton:first-child, toolbar.inline-toolbar toolbutton:first-child > 
button.flat, .inline-toolbar toolbutton:first-child > button.flat, searchbar.inline-toolbar 
toolbutton:first-child > button.flat,
+.linked:not(.vertical) > entry:first-child, .linked:not(.vertical) > spinbutton:first-child:not(.vertical), 
.inline-toolbar button:first-child, .linked > button:first-child, toolbar.inline-toolbar 
toolbutton:first-child > button.flat, .inline-toolbar toolbutton:first-child > button.flat, 
searchbar.inline-toolbar toolbutton:first-child > button.flat,
 .inline-toolbar.location-bar toolbutton:first-child > button.flat, toolbar.inline-toolbar 
toolbutton:first-child > button.sidebar-button, .inline-toolbar toolbutton:first-child > 
button.sidebar-button, searchbar.inline-toolbar toolbutton:first-child > button.sidebar-button,
 .inline-toolbar.location-bar toolbutton:first-child > button.sidebar-button, .inline-toolbar headerbar 
toolbutton:first-child > button.titlebutton, headerbar .inline-toolbar toolbutton:first-child > 
button.titlebutton,
 .inline-toolbar .titlebar toolbutton:first-child > button.titlebutton,
@@ -1361,10 +1108,7 @@ headerbar .inline-toolbar toolbutton:backdrop:first-child > button.titlebutton,
 .titlebar .inline-toolbar toolbutton:backdrop:first-child > button.titlebutton, combobox.linked 
button:nth-child(2):dir(rtl), .linked:not(.vertical) > combobox:first-child > button.combo {
   border-top-left-radius: 3px;
   border-bottom-left-radius: 3px; }
-.linked:not(.vertical) > entry:last-child, .linked:not(.vertical) > spinbutton:last-child:not(.vertical), 
.inline-toolbar notebook > header > tabs > arrow:last-child, .inline-toolbar notebook > header > tabs > 
arrow:last-child:backdrop, .inline-toolbar
-button:last-child, notebook > header > tabs.linked > arrow:last-child, notebook > header > tabs.linked > 
arrow:last-child:hover, notebook > header > tabs.linked > arrow:last-child:active, notebook > header > 
tabs.linked > arrow:last-child:checked, notebook > header > tabs.linked > arrow:last-child:backdrop, .linked >
-button:last-child, headerbar .linked > button.titlebutton:last-child,
-.titlebar .linked > button.titlebutton:last-child, toolbar.inline-toolbar toolbutton:last-child > 
button.flat, .inline-toolbar toolbutton:last-child > button.flat, searchbar.inline-toolbar 
toolbutton:last-child > button.flat,
+.linked:not(.vertical) > entry:last-child, .linked:not(.vertical) > spinbutton:last-child:not(.vertical), 
.inline-toolbar button:last-child, .linked > button:last-child, toolbar.inline-toolbar toolbutton:last-child

button.flat, .inline-toolbar toolbutton:last-child > button.flat, searchbar.inline-toolbar

toolbutton:last-child > button.flat,
 .inline-toolbar.location-bar toolbutton:last-child > button.flat, toolbar.inline-toolbar 
toolbutton:last-child > button.sidebar-button, .inline-toolbar toolbutton:last-child > button.sidebar-button, 
searchbar.inline-toolbar toolbutton:last-child > button.sidebar-button,
 .inline-toolbar.location-bar toolbutton:last-child > button.sidebar-button, .inline-toolbar headerbar 
toolbutton:last-child > button.titlebutton, headerbar .inline-toolbar toolbutton:last-child > 
button.titlebutton,
 .inline-toolbar .titlebar toolbutton:last-child > button.titlebutton,
@@ -1384,10 +1128,7 @@ headerbar .inline-toolbar toolbutton:backdrop:last-child > button.titlebutton,
   border-top-right-radius: 3px;
   border-bottom-right-radius: 3px;
   border-right-style: solid; }
-.linked:not(.vertical) > entry:only-child, .linked:not(.vertical) > spinbutton:only-child:not(.vertical), 
.inline-toolbar notebook > header > tabs > arrow:only-child, .inline-toolbar notebook > header > tabs > 
arrow:only-child:backdrop, .inline-toolbar
-button:only-child, notebook > header > tabs.linked > arrow:only-child, notebook > header > tabs.linked > 
arrow:only-child:hover, notebook > header > tabs.linked > arrow:only-child:active, notebook > header > 
tabs.linked > arrow:only-child:checked, notebook > header > tabs.linked > arrow:only-child:backdrop, .linked >
-button:only-child, headerbar .linked > button.titlebutton:only-child,
-.titlebar .linked > button.titlebutton:only-child, toolbar.inline-toolbar toolbutton:only-child > 
button.flat, .inline-toolbar toolbutton:only-child > button.flat, searchbar.inline-toolbar 
toolbutton:only-child > button.flat,
+.linked:not(.vertical) > entry:only-child, .linked:not(.vertical) > spinbutton:only-child:not(.vertical), 
.inline-toolbar button:only-child, .linked > button:only-child, toolbar.inline-toolbar toolbutton:only-child

button.flat, .inline-toolbar toolbutton:only-child > button.flat, searchbar.inline-toolbar

toolbutton:only-child > button.flat,
 .inline-toolbar.location-bar toolbutton:only-child > button.flat, toolbar.inline-toolbar 
toolbutton:only-child > button.sidebar-button, .inline-toolbar toolbutton:only-child > button.sidebar-button, 
searchbar.inline-toolbar toolbutton:only-child > button.sidebar-button,
 .inline-toolbar.location-bar toolbutton:only-child > button.sidebar-button, .inline-toolbar headerbar 
toolbutton:only-child > button.titlebutton, headerbar .inline-toolbar toolbutton:only-child > 
button.titlebutton,
 .inline-toolbar .titlebar toolbutton:only-child > button.titlebutton,
@@ -1407,41 +1148,26 @@ headerbar .inline-toolbar toolbutton:backdrop:only-child > button.titlebutton,
   border-radius: 3px;
   border-style: solid; }
 
-.linked.vertical > entry, .linked.vertical > spinbutton:not(.vertical), notebook > header > 
tabs.linked.vertical > arrow, notebook > header > tabs.linked.vertical > arrow:hover, notebook > header > 
tabs.linked.vertical > arrow:active, notebook > header > tabs.linked.vertical > arrow:checked, notebook > 
header > tabs.linked.vertical > arrow:backdrop, .linked.vertical >
-button, headerbar .linked.vertical > button.titlebutton,
-.titlebar .linked.vertical > button.titlebutton, .linked.vertical >
-button:hover, .linked.vertical >
-button:active, .linked.vertical >
-button:checked, .linked.vertical >
-button:backdrop, .linked.vertical > combobox > button.combo {
+.linked.vertical > entry, .linked.vertical > spinbutton:not(.vertical), .linked.vertical > button, 
.linked.vertical > button:hover, .linked.vertical > button:active, .linked.vertical > button:checked, 
.linked.vertical > button:backdrop, .linked.vertical > combobox > button.combo {
   border-style: solid solid none solid;
   border-radius: 0; }
 
-.linked.vertical > entry:first-child, .linked.vertical > spinbutton:first-child:not(.vertical), notebook > 
header > tabs.linked.vertical > arrow:first-child, notebook > header > tabs.linked.vertical > 
arrow:first-child:hover, notebook > header > tabs.linked.vertical > arrow:first-child:active, notebook > 
header > tabs.linked.vertical > arrow:first-child:checked, notebook > header > tabs.linked.vertical > 
arrow:first-child:backdrop, .linked.vertical >
-button:first-child, headerbar .linked.vertical > button.titlebutton:first-child,
-.titlebar .linked.vertical > button.titlebutton:first-child, .linked.vertical > combobox:first-child > 
button.combo {
+.linked.vertical > entry:first-child, .linked.vertical > spinbutton:first-child:not(.vertical), 
.linked.vertical > button:first-child, .linked.vertical > combobox:first-child > button.combo {
   border-top-left-radius: 3px;
   border-top-right-radius: 3px; }
-.linked.vertical > entry:last-child, .linked.vertical > spinbutton:last-child:not(.vertical), notebook > 
header > tabs.linked.vertical > arrow:last-child, notebook > header > tabs.linked.vertical > 
arrow:last-child:hover, notebook > header > tabs.linked.vertical > arrow:last-child:active, notebook > header

tabs.linked.vertical > arrow:last-child:checked, notebook > header > tabs.linked.vertical >

arrow:last-child:backdrop, .linked.vertical >
-button:last-child, headerbar .linked.vertical > button.titlebutton:last-child,
-.titlebar .linked.vertical > button.titlebutton:last-child, .linked.vertical > combobox:last-child > 
button.combo {
+.linked.vertical > entry:last-child, .linked.vertical > spinbutton:last-child:not(.vertical), 
.linked.vertical > button:last-child, .linked.vertical > combobox:last-child > button.combo {
   border-bottom-left-radius: 3px;
   border-bottom-right-radius: 3px;
   border-style: solid; }
-.linked.vertical > entry:only-child, .linked.vertical > spinbutton:only-child:not(.vertical), notebook > 
header > tabs.linked.vertical > arrow:only-child, notebook > header > tabs.linked.vertical > 
arrow:only-child:hover, notebook > header > tabs.linked.vertical > arrow:only-child:active, notebook > header

tabs.linked.vertical > arrow:only-child:checked, notebook > header > tabs.linked.vertical >

arrow:only-child:backdrop, .linked.vertical >
-button:only-child, headerbar .linked.vertical > button.titlebutton:only-child,
-.titlebar .linked.vertical > button.titlebutton:only-child, .linked.vertical > combobox:only-child > 
button.combo {
+.linked.vertical > entry:only-child, .linked.vertical > spinbutton:only-child:not(.vertical), 
.linked.vertical > button:only-child, .linked.vertical > combobox:only-child > button.combo {
   border-radius: 3px;
   border-style: solid; }
 
 modelbutton.flat,
 .menuitem.button.flat, modelbutton.flat:backdrop, modelbutton.flat:backdrop:hover,
 .menuitem.button.flat:backdrop,
-.menuitem.button.flat:backdrop:hover, button:link, headerbar button.titlebutton:link,
-.titlebar button.titlebutton:link,
-button:visited,
-headerbar button.titlebutton:visited,
-.titlebar button.titlebutton:visited, button:link:hover, button:link:active, button:link:checked,
+.menuitem.button.flat:backdrop:hover, button:link,
+button:visited, button:link:hover, button:link:active, button:link:checked,
 button:visited:hover,
 button:visited:active,
 button:visited:checked, button:link:backdrop,
@@ -1485,8 +1211,7 @@ modelbutton.flat arrow {
   modelbutton.flat arrow.right {
     -gtk-icon-source: -gtk-icontheme("pan-end-symbolic"); }
 
-button.color, headerbar button.color.titlebutton,
-.titlebar button.color.titlebutton {
+button.color {
   padding: 4px; }
   button.color colorswatch:only-child {
     box-shadow: 0 1px rgba(255, 255, 255, 0.76923); }
@@ -1498,23 +1223,14 @@ button.color, headerbar button.color.titlebutton,
 /*********
  * Links *
  *********/
-*:link, button:link, headerbar button.titlebutton:link,
-.titlebar button.titlebutton:link,
-button:visited,
-headerbar button.titlebutton:visited,
-.titlebar button.titlebutton:visited {
+*:link, button:link,
+button:visited {
   color: #2a76c6; }
   *:link:visited,
-  button:visited,
-  headerbar button.titlebutton:visited,
-  .titlebar button.titlebutton:visited {
+  button:visited {
     color: #215d9c; }
     *:selected *:link:visited, *:selected button:visited:link,
-    *:selected button:visited,
-    *:selected headerbar button.titlebutton:visited,
-    headerbar *:selected button.titlebutton:visited,
-    *:selected .titlebar button.titlebutton:visited,
-    .titlebar *:selected button.titlebutton:visited {
+    *:selected button:visited {
       color: #b7d3f0; }
   *:link:hover, button:hover:link,
   button:hover:visited {
@@ -1540,22 +1256,16 @@ headerbar button.titlebutton:visited,
   *:selected button:visited {
     color: #dbe9f7; }
 
-button:link, headerbar button.titlebutton:link,
-.titlebar button.titlebutton:link,
-button:visited,
-headerbar button.titlebutton:visited,
-.titlebar button.titlebutton:visited {
+button:link,
+button:visited {
   text-shadow: none; }
   button:link:hover, button:link:active, button:link:checked,
   button:visited:hover,
   button:visited:active,
   button:visited:checked {
     text-shadow: none; }
-  button:link > label, headerbar button.titlebutton:link > label,
-  .titlebar button.titlebutton:link > label,
-  button:visited > label,
-  headerbar button.titlebutton:visited > label,
-  .titlebar button.titlebutton:visited > label {
+  button:link > label,
+  button:visited > label {
     text-decoration-line: underline; }
 
 /*****************
@@ -1568,9 +1278,7 @@ spinbutton:not(.vertical) {
     background: none;
     border: none;
     box-shadow: none; }
-  spinbutton:not(.vertical) button,
-  spinbutton:not(.vertical) .titlebar button.titlebutton,
-  .titlebar spinbutton:not(.vertical) button.titlebutton {
+  spinbutton:not(.vertical) button {
     margin: 0;
     background-image: none;
     border-style: none none none solid;
@@ -1663,9 +1371,7 @@ spinbutton.vertical entry, spinbutton.vertical spinbutton:not(.vertical) {
   min-width: 32px;
   padding: 0;
   border-radius: 0; }
-spinbutton.vertical button,
-spinbutton.vertical .titlebar button.titlebutton,
-.titlebar spinbutton.vertical button.titlebutton {
+spinbutton.vertical button {
   min-height: 32px;
   min-width: 32px;
   padding: 0; }
@@ -1880,9 +1586,7 @@ headerbar {
       background-image: linear-gradient(to bottom, #4a90d9);
       box-shadow: inset 0 1px rgba(165, 200, 236, 0.88); }
     .selection-mode.titlebar:not(headerbar) button,
-    headerbar.selection-mode button,
-    headerbar.selection-mode .titlebar button.titlebutton,
-    .titlebar headerbar.selection-mode button.titlebutton {
+    headerbar.selection-mode button {
       color: #ffffff;
       outline-color: rgba(255, 255, 255, 0.3);
       border-color: #1c5187;
@@ -2122,24 +1826,18 @@ headerbar {
     padding: 0 4px;
     min-height: 36px; }
     .default-decoration.titlebar:not(headerbar) button,
-    headerbar.default-decoration button,
-    headerbar.default-decoration .titlebar button.titlebutton,
-    .titlebar headerbar.default-decoration button.titlebutton {
+    headerbar.default-decoration button {
       min-height: 26px;
       padding: 0 5px; }
   .titlebar:not(headerbar) entry, .titlebar:not(headerbar) spinbutton:not(.vertical),
   .titlebar:not(headerbar) spinbutton,
   .titlebar:not(headerbar) separator,
   .titlebar:not(headerbar) button,
-  .titlebar:not(headerbar) button.titlebutton,
   headerbar entry,
   headerbar spinbutton:not(.vertical),
   headerbar spinbutton,
   headerbar separator,
-  headerbar button,
-  headerbar button.titlebutton,
-  headerbar .titlebar button.titlebutton,
-  .titlebar headerbar button.titlebutton {
+  headerbar button {
     margin-top: 6px;
     margin-bottom: 6px; }
 
@@ -2253,9 +1951,7 @@ treeview.view {
       border-width: 1px 0;
       border-style: solid;
       border-color: #4a90d9; }
-  treeview.view header button,
-  treeview.view header .titlebar button.titlebutton,
-  .titlebar treeview.view header button.titlebutton {
+  treeview.view header button {
     color: #979a9b;
     background-color: #ffffff;
     font-weight: bold;
@@ -2276,9 +1972,7 @@ treeview.view {
     color: #4a90d9;
     box-shadow: inset 1px 1px 0 1px #4a90d9, inset -1px 0 0 1px #4a90d9, inset 1px 1px #ffffff, inset -1px 0 
#ffffff; }
 
-treeview.view header button,
-treeview.view header .titlebar button.titlebutton,
-.titlebar treeview.view header button.titlebutton, treeview.view header button:hover, treeview.view header 
button:active {
+treeview.view header button, treeview.view header button:hover, treeview.view header button:active {
   padding: 3px 6px;
   border-style: none solid solid none;
   border-radius: 0;
@@ -2594,9 +2288,7 @@ notebook > stack:not(:only-child) {
   -GtkScrollbar-min-slider-length: 42;
   -GtkRange-stepper-spacing: 0;
   -GtkRange-trough-under-steppers: 1; }
-scrollbar button, scrollbar headerbar button.titlebutton, headerbar scrollbar button.titlebutton,
-scrollbar .titlebar button.titlebutton,
-.titlebar scrollbar button.titlebutton {
+scrollbar button {
   border: none; }
 scrollbar.overlay-indicator:not(.dragging):not(.hovering) {
   opacity: 0.4;
@@ -4050,9 +3742,7 @@ row.activatable:selected.has-open-popup, row.activatable:selected:hover {
 row.activatable:selected:backdrop {
   background-color: #4a90d9; }
 
-row:selected button,
-row:selected .titlebar button.titlebutton,
-.titlebar row:selected button.titlebutton {
+row:selected button {
   color: #2e3436;
   outline-color: rgba(46, 52, 54, 0.3);
   border-color: #9d9d99;
@@ -4444,14 +4134,11 @@ placessidebar row {
     padding-right: 2px; }
   placessidebar row label.sidebar-label:dir(rtl) {
     padding-left: 2px; }
-  button.sidebar-button, headerbar button.sidebar-button.titlebutton,
-  .titlebar button.sidebar-button.titlebutton {
+  button.sidebar-button {
     padding: 5px;
     border-radius: 100%;
     -gtk-outline-radius: 100%; }
-    button.sidebar-button:not(:hover):not(:active) > image, headerbar 
button.sidebar-button.titlebutton:not(:hover):not(:active) > image,
-    .titlebar button.sidebar-button.titlebutton:not(:hover):not(:active) > image, 
button.sidebar-button:backdrop > image, headerbar button.sidebar-button.titlebutton:backdrop > image,
-    .titlebar button.sidebar-button.titlebutton:backdrop > image {
+    button.sidebar-button:not(:hover):not(:active) > image, button.sidebar-button:backdrop > image {
       opacity: 0.7; }
 placessidebar row:selected:active {
   box-shadow: none; }
@@ -4529,24 +4216,10 @@ infobar {
   color: #ffffff;
   text-shadow: 0 1px #2a76c6;
   border-color: #2a76c6; }
-  .info button, .info headerbar button.titlebutton, headerbar .info button.titlebutton,
-  .info .titlebar button.titlebutton,
-  .titlebar .info button.titlebutton,
+  .info button,
   .question button,
-  .question headerbar button.titlebutton,
-  headerbar .question button.titlebutton,
-  .question .titlebar button.titlebutton,
-  .titlebar .question button.titlebutton,
   .warning button,
-  .warning headerbar button.titlebutton,
-  headerbar .warning button.titlebutton,
-  .warning .titlebar button.titlebutton,
-  .titlebar .warning button.titlebutton,
-  .error button,
-  .error headerbar button.titlebutton,
-  headerbar .error button.titlebutton,
-  .error .titlebar button.titlebutton,
-  .titlebar .error button.titlebutton {
+  .error button {
     color: #ffffff;
     outline-color: rgba(255, 255, 255, 0.3);
     border-color: #1c5187;
@@ -4759,9 +4432,7 @@ colorswatch#editor-color-sample {
   padding: 6px;
   border-style: none;
   border-radius: 5px; }
-.scale-popup button, .scale-popup headerbar button.titlebutton, headerbar .scale-popup button.titlebutton,
-.scale-popup .titlebar button.titlebutton,
-.titlebar .scale-popup button.titlebutton {
+.scale-popup button {
   padding: 6px; }
   .scale-popup button:hover {
     background-color: rgba(46, 52, 54, 0.1);
@@ -4804,8 +4475,6 @@ decoration {
     box-shadow: none; }
 
 headerbar button.titlebutton,
-headerbar .titlebar button.titlebutton,
-.titlebar headerbar button.titlebutton,
 .titlebar button.titlebutton {
   text-shadow: 0 1px rgba(255, 255, 255, 0.76923);
   -gtk-icon-shadow: 0 1px rgba(255, 255, 255, 0.76923); }
@@ -4910,12 +4579,10 @@ cursor-handle {
 .context-menu {
   font: initial; }
 
-button.circular, headerbar button.circular.titlebutton,
-.titlebar button.circular.titlebutton {
+button.circular {
   border-radius: 20px;
   -gtk-outline-radius: 20px; }
-  button.circular label,
-  .titlebar button.circular.titlebutton label {
+  button.circular label {
     padding: 0; }
 
 .keycap {
@@ -4939,14 +4606,10 @@ button.circular, headerbar button.circular.titlebutton,
 *:drop(active) {
   border: 1px solid black; }
 
-stackswitcher button.text-button,
-stackswitcher .titlebar button.text-button.titlebutton,
-.titlebar stackswitcher button.text-button.titlebutton {
+stackswitcher button.text-button {
   min-width: 100px; }
 
 stackswitcher button.circular,
-stackswitcher .titlebar button.circular.titlebutton,
-.titlebar stackswitcher button.circular.titlebutton,
 stackswitcher button.text-button.circular {
   min-width: 32px;
   min-height: 32px;

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