Index: django/contrib/admin/static/admin/css/widgets.css
===================================================================
--- django/contrib/admin/static/admin/css/widgets.css	(revision 16738)
+++ django/contrib/admin/static/admin/css/widgets.css	(working copy)
@@ -275,7 +275,7 @@
     padding: 0;
     border-collapse: collapse;
     background: white;
-    width: 99%;
+    width: 100%;
 }
 
 .calendar caption, .calendarbox h2 {