[gnome-clocks] Fix css background on prelight

[Paolo Borelli <pborelli src gnome org>]

commit 9378d95b6e9c829b73e1b1b64067e7e78ceb0f58
Author: Paolo Borelli <pborelli gnome org>
Date:   Wed Dec 5 15:16:32 2012 +0100

    Fix css background on prelight

 data/gtk-style.css |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/data/gtk-style.css b/data/gtk-style.css
index d88de1f..1e78cf6 100644
--- a/data/gtk-style.css
+++ b/data/gtk-style.css
@@ -15,6 +15,7 @@
 }
 
 .clocks-digital-renderer {
+    background-color: transparent;
     border-radius: 12px;
 }