[gtk/wip/jimmac/inline-toolbars-dont-exist] Adwaita: inline-toolbar separation

[Jakub Steiner <jimmac src gnome org>]

commit 99e31f52b3b1ebb8622e40b24ec96c8a937284a6
Author: Jakub Steiner <jimmac gmail com>
Date:   Mon Nov 16 15:50:24 2020 +0100

    Adwaita: inline-toolbar separation
    
    - they don' exist, but they can look good
    
    Fixes https://gitlab.gnome.org/GNOME/gtk/-/issues/3369

 demos/widget-factory/widget-factory.ui | 1 +
 gtk/theme/Adwaita/_common.scss         | 2 ++
 2 files changed, 3 insertions(+)
---
diff --git a/demos/widget-factory/widget-factory.ui b/demos/widget-factory/widget-factory.ui
index 3a7e2533fa..c5d202aa0b 100644
--- a/demos/widget-factory/widget-factory.ui
+++ b/demos/widget-factory/widget-factory.ui
@@ -2039,6 +2039,7 @@ microphone-sensitivity-medium-symbolic</property>
                                       <object class="GtkBox">
                                         <style>
                                           <class name="linked"/>
+                                          <class name="inline-toolbar"/>
                                         </style>
                                         <child>
                                           <object class="GtkButton" id="decrease_button">
diff --git a/gtk/theme/Adwaita/_common.scss b/gtk/theme/Adwaita/_common.scss
index 7c0a7ae56b..78dd4a6871 100644
--- a/gtk/theme/Adwaita/_common.scss
+++ b/gtk/theme/Adwaita/_common.scss
@@ -891,6 +891,8 @@ modelbutton.flat arrow {
   &:backdrop:disabled { @include button('backdrop-insensitive'); }
 }
 
+box.inline-toolbar { margin-top: 2px; }
+
 button.color {
   padding: 4px;