[gnome-shell-sass] system: Align submenu labels with parent

[Florian Müllner <fmuellner src gnome org>]

commit 57a2e5bfe179d9db1e05c3edaffdcb3fee307be0
Author: Florian Müllner <fmuellner gnome org>
Date:   Sun Nov 19 20:26:50 2017 +0100

    system: Align submenu labels with parent
    
    All section titles use an icon, while all corresponding submenu items
    are plain-text. As a result, labels in submenus aren't aligned with
    the labels in the parent, which makes them harder to read and look
    unbalanced. Address this by adding additional whitespace to submenu
    items to account for the additional elements in the title.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=706191

 _common.scss |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/_common.scss b/_common.scss
index 9ffb3a7..9d040a2 100644
--- a/_common.scss
+++ b/_common.scss
@@ -1110,6 +1110,12 @@ StScrollBar {
   .aggregate-menu {
     min-width: 21em;
     .popup-menu-icon { padding: 0 4px; }
+    .popup-sub-menu .popup-menu-item :first-child {
+      &:ltr { /* 12px spacing + 2*4px padding */
+              padding-left: 20px; margin-left: 1.09em; }
+      &:rtl { /* 12px spacing + 2*4px padding */
+              padding-right: 20px; margin-right: 1.09em; }
+    }
   }
 
   .system-menu-action {