[gtk/wip/jimmac/notebook-focus] Adwaita: notebook tab focus

[Jakub Steiner <jimmac src gnome org>]

commit 1dea376c84119b61a4e25eab7fe85b6cde979443
Author: Jakub Steiner <jimmac gmail com>
Date:   Mon May 4 16:33:24 2020 +0200

    Adwaita: notebook tab focus
    
    - just like entries tabs need to be handled with focus-within

 gtk/theme/Adwaita/_common.scss | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gtk/theme/Adwaita/_common.scss b/gtk/theme/Adwaita/_common.scss
index ba1e6738dd..3a25eb120c 100644
--- a/gtk/theme/Adwaita/_common.scss
+++ b/gtk/theme/Adwaita/_common.scss
@@ -1892,7 +1892,7 @@ popover.background {
  * Notebooks *
  *************/
 notebook {
-  @include focus-ring("> header > tabs > tab", $offset: -7px);
+  @include focus-ring("> header > tabs > tab", $offset: -7px, $within: true);
 
   > header {
     padding: 1px;