[gnome-shell-sass] workspaceAnimation: Move background to WorkspaceGroup

[Florian Müllner <fmuellner src gnome org>]

commit da0df35aabbc0a4aa30c874b2808808931e37608
Author: Alexander Mikhaylenko <exalm7659 gmail com>
Date:   Sun Jun 21 01:29:21 2020 +0500

    workspaceAnimation: Move background to WorkspaceGroup
    
    Make each wallpaper have a wallpaper and clip it. Add a separate background
    to MonitorGroup and add spacing between each workspace
    
    Fixes https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/3635,
          https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/945,
          https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/948
    
    Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1326>

 widgets/_misc.scss | 6 ++++++
 1 file changed, 6 insertions(+)
---
diff --git a/widgets/_misc.scss b/widgets/_misc.scss
index 1029c3e..0fe174a 100644
--- a/widgets/_misc.scss
+++ b/widgets/_misc.scss
@@ -51,3 +51,9 @@
   @include fontsize($base_font_size - 1);
   color: $warning_color;
 }
+
+/* Workspace animation */
+
+.workspace-animation {
+  background-color: $system_bg_color;
+}