diff --git a/kallithea/public/less/style.less b/kallithea/public/less/style.less
--- a/kallithea/public/less/style.less
+++ b/kallithea/public/less/style.less
@@ -763,8 +763,8 @@ div.comment-prev-next-links div.next-com
 /* use columns and form-horizontal for pull request page */
 .pr-box {
   .make-sm-column(9);
+  max-width: @container-md;
   #pr-summary {
-    max-width: @container-md;
     .form-horizontal;
     .form-group > label {
       .make-sm-column(3);