- Rollback of patch #139117: according to Steven it is silly. Let's have a better look at it.

modules/system/defaults.css

@@ -43,9 +43,11 @@ th {
   display: inline-block;
 }
 
+/* Hides from IE-mac \*/
 * html .clear-block {
   height: 1%;
 }
 .clear-block {
   display: block;
 }
+/* End hide from IE-mac */