Index: wp-content/themes/twentythirteen/style.css
===================================================================
--- wp-content/themes/twentythirteen/style.css	(revision 23695)
+++ wp-content/themes/twentythirteen/style.css	(working copy)
@@ -2635,6 +2635,7 @@
 .sidebar .site-footer .widget-area {
 	left: -158px;
 	max-width: 724px;
+	position: relative;
 }
 
 .site-footer .widget {