theme: make toggled tbuttons in toolbars visible

- do what Alex does in libadwaita

Fixes https://gitlab.gnome.org/GNOME/gtk/-/issues/4264

diff --git a/gtk/theme/Default/_common.scss b/gtk/theme/Default/_common.scss
index a3f307459981d2eff2718e893ee558bc229990eb..e3129bd4d5d21b82d5e51273667eaaeda9480e86 100644 (file)
--- a/gtk/theme/Default/_common.scss
+++ b/gtk/theme/Default/_common.scss
@@ -897,13 +897,8 @@ modelbutton.flat arrow {
 
 .toolbar button {
   margin: 1px;
-  @extend %undecorated_button;
 
-  &:hover { @include button('hover'); }
-  &:active { @include button('active'); }
-  &:disabled { @include button('insensitive'); }
-  &:backdrop { @include button('backdrop'); }
-  &:backdrop:disabled { @include button('backdrop-insensitive'); }
+   @extend %button_basic_flat;
 }
 
 button.color {