Ticket #25506: 25506.diff

wp-content/themes/twentytwelve/style.css

@@ -1454 +1454 @@
                 width: 65.104166667%;
         }
         body.template-front-page .site-content,
-        body.single-attachment .site-content,
+        body.attachment .site-content,
         body.full-width .site-content {
                 width: 100%;
         }