[gtk/listbox-separators: 2/3] Adwaita: Implement list separators

[Matthias Clasen <matthiasc src gnome org>]

commit 4551aef081a467c8832d969324cfd3724e4bc0a9
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Apr 12 20:25:16 2019 -0400

    Adwaita: Implement list separators
    
    Just put a top border on every row.

 gtk/theme/Adwaita/_common.scss | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/gtk/theme/Adwaita/_common.scss b/gtk/theme/Adwaita/_common.scss
index dfc6862606..e8f2409442 100644
--- a/gtk/theme/Adwaita/_common.scss
+++ b/gtk/theme/Adwaita/_common.scss
@@ -3715,6 +3715,10 @@ list {
   row { padding: 2px; }
   row.expander { padding: 0px; }
   row.expander .row-header { padding: 2px; }
+
+  &.separators row:not(:first-child) {
+    border-top: 1px solid $borders_color;
+  }
 }
 
 row {