[libadwaita/wip/exalm/tab-style: 2/2] stylesheet: Add backdrop transition for tab bar

[Alexander Mikhaylenko <alexm src gnome org>]

commit 2966d6dda4fb666555d9499a84338b7d6ae3a2c2
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Thu Apr 7 22:03:07 2022 +0400

    stylesheet: Add backdrop transition for tab bar
    
    Match header bar.

 src/stylesheet/widgets/_tab-view.scss | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/stylesheet/widgets/_tab-view.scss b/src/stylesheet/widgets/_tab-view.scss
index a7861f2e..a8284196 100644
--- a/src/stylesheet/widgets/_tab-view.scss
+++ b/src/stylesheet/widgets/_tab-view.scss
@@ -84,6 +84,7 @@ tabbar {
       > .start-action,
       > .end-action {
         filter: opacity(0.5);
+        transition: $backdrop_transition;
       }
     }
   }