[gnome-software] Do not show a random white line above the star rating widget

[Richard Hughes <rhughes src gnome org>]

commit 964a24619c02b717f40af56bd2dabc4f2ba9ad24
Author: Richard Hughes <richard hughsie com>
Date:   Fri Oct 24 14:20:32 2014 +0100

    Do not show a random white line above the star rating widget
    
    We don't want to inherit this from the GtkButton style.

 src/gtk-style.css |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/src/gtk-style.css b/src/gtk-style.css
index b17da99..7f6c93d 100644
--- a/src/gtk-style.css
+++ b/src/gtk-style.css
@@ -136,6 +136,8 @@ GtkBox.star {
        border-radius: 0;
        border-width: 0px;
        padding: 0;
+       box-shadow: none;
+       outline-offset: -1px;
 }
 
 .star {