[gnome-builder/wip/chergert/shortcuts] css: stylize keyboard buttons a bit

[Christian Hergert <chergert src gnome org>]

commit 4565be41de0e49072966715498765560b3a11b0a
Author: Christian Hergert <christian hergert me>
Date:   Thu Aug 27 21:20:13 2015 -0700

    css: stylize keyboard buttons a bit

 data/theme/Adwaita.css |    9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)
---
diff --git a/data/theme/Adwaita.css b/data/theme/Adwaita.css
index c7aebad..8a78817 100644
--- a/data/theme/Adwaita.css
+++ b/data/theme/Adwaita.css
@@ -45,9 +45,12 @@ GbTree:backdrop.dim-label {
 
 
 GbAccelLabel GtkFrame {
-  color: #555753;
-  border-radius: 5px;
-  padding: 3px 8px 3px 8px;
   background-color: #fefefe;
+  background-image: linear-gradient(#FEFEFE, #EFEFEF);
   border: 1px solid #cecece;
+  border-radius: 5px;
+  box-shadow: 0px 1px 0px #fff inset,
+              0px -2px 0px #dedede inset;
+  color: #555753;
+  padding: 3px 8px 3px 8px;
 }