[gnome-themes-standard] widgets: avoid double borders for viewports inside scrolled windows

[Cosimo Cecchi <cosimoc src gnome org>]

commit b1d848661db04095bfc20bc7c7ef91a96f637b00
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Mon Apr 30 18:48:32 2012 -0400

    widgets: avoid double borders for viewports inside scrolled windows
    
    Both render a frame, so remove the inner viewport frame.

 themes/Adwaita/gtk-3.0/gtk-widgets.css |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/themes/Adwaita/gtk-3.0/gtk-widgets.css b/themes/Adwaita/gtk-3.0/gtk-widgets.css
index 19cffbb..1d70c1b 100644
--- a/themes/Adwaita/gtk-3.0/gtk-widgets.css
+++ b/themes/Adwaita/gtk-3.0/gtk-widgets.css
@@ -704,6 +704,12 @@ GtkScrolledWindow.frame:backdrop {
     border-color: @unfocused_borders;
 }
 
+/* avoid double borders when a viewport is 
+ * packed into a GtkScrolledWindow */
+GtkScrolledWindow GtkViewport.frame {
+    border-style: none;
+}
+
 /***********
  * Buttons *
  ***********/