Index: wp-content/themes/twentytwelve/style.css
===================================================================
--- wp-content/themes/twentytwelve/style.css	(revision 21432)
+++ wp-content/themes/twentytwelve/style.css	(working copy)
@@ -1281,7 +1281,8 @@
 	margin-left: 12px;
 	margin-left: 0.857142857rem;
 }
-.widget_recent_entries .post-date {
+.widget_recent_entries .post-date,
+.widget_rss .rss-date {
 	color: #aaa;
 	font-size: 11px;
 	font-size: 0.785714286rem;
@@ -1312,10 +1313,6 @@
 	font-size: 0.928571429rem;
 	line-height: 1.846153846;
 }
-.widget_rss li {
-	margin: 12px 0;
-	margin: 0.857142857rem 0;
-}
 
 
 /* =Media queries