Index: wp-content/themes/twentytwelve/style.css
===================================================================
--- wp-content/themes/twentytwelve/style.css	(revision 21494)
+++ wp-content/themes/twentytwelve/style.css	(working copy)
@@ -456,12 +456,6 @@
 /* Page structure */
 .wrapper {
 	overflow: hidden;
-	-moz-hyphens: auto;
-	-ms-word-break: break-all;
-	-webkit-hyphens: auto;
-	hyphens: auto;
-	word-break: break-all;
-	word-break: break-word;
 }
 .site {
 	padding: 0 24px;
@@ -629,6 +623,13 @@
 
 /* Sidebar */
 .widget-area .widget {
+	overflow: hidden;
+	-moz-hyphens: auto;
+	-ms-word-break: break-all;
+	-webkit-hyphens: auto;
+	hyphens: auto;
+	word-break: break-all;
+	word-break: break-word;
 	margin-bottom: 48px;
 	margin-bottom: 3.428571429rem;
 }