[libadwaita/wip/exalm/card: 33/34] stylesheet: Make .navigation-sidebar remove background like .sidebar

[Alexander Mikhaylenko <alexm src gnome org>]

commit 169ba027a4d3284b8de27232756e9040535cae8c
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Thu Oct 21 18:30:22 2021 +0500

    stylesheet: Make .navigation-sidebar remove background like .sidebar
    
    It's too complex, people have to use both style classes on different
    widgets. Make it just .navigation-sidebar instead.

 src/stylesheet/widgets/_sidebars.scss | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/src/stylesheet/widgets/_sidebars.scss b/src/stylesheet/widgets/_sidebars.scss
index 3004ce20..4513edff 100644
--- a/src/stylesheet/widgets/_sidebars.scss
+++ b/src/stylesheet/widgets/_sidebars.scss
@@ -40,6 +40,9 @@ separator.sidebar {
  **********************/
 
 .navigation-sidebar {
+  background-color: transparent;
+  color: inherit;
+
   padding: $menu-margin 0; //only vertical padding. horizontal row size would clip
 
   > separator {