diff --git a/usr/themes/default/grid.css b/usr/themes/default/grid.css
index e8c959cdcc..b7688f68d7 100644
--- a/usr/themes/default/grid.css
+++ b/usr/themes/default/grid.css
@@ -4,7 +4,7 @@
  * Version: 1.2.8
  * Update: 2013.11.25
  */
-.container, .row [class*="col-"] {
+.container, .row > [class*="col-"] {
   -webkit-box-sizing: border-box;
   -moz-box-sizing: border-box;
   box-sizing: border-box; }
@@ -19,14 +19,14 @@
   margin-right: -10px;
   margin-left: -10px; }
 
-.row [class*="col-"] {
+.row > [class*="col-"] {
   float: left;
   min-height: 1px;
   padding-right: 10px;
   padding-left: 10px; }
 
-.row [class*="-push-"],
-.row [class*="-pull-"] {
+.row > [class*="-push-"],
+.row > [class*="-pull-"] {
   position: relative; }
 
 /*