[xdg-desktop-portal-gnome/wip/exalm/headerbar] wallpaperpreview: Sync header bar style

[Alexander Mikhaylenko <alexm src gnome org>]

commit dd11507cdbef9ba85d3a868564cf7b1b1ac5b8a3
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Mon Jul 4 16:52:59 2022 +0400

    wallpaperpreview: Sync header bar style

 src/wallpaperpreview.css | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/wallpaperpreview.css b/src/wallpaperpreview.css
index 6a53a2c..9751f64 100644
--- a/src/wallpaperpreview.css
+++ b/src/wallpaperpreview.css
@@ -29,7 +29,7 @@ widget.window {
 
 widget.window .header-bar {
   min-height: 15px;
-  box-shadow: inset 0 -1px @borders;
+  box-shadow: inset 0 -1px @headerbar_shade_color;
 }
 
 widget.window.front {