diff --git a/modules/system/system.base.css b/modules/system/system.base.css
index 412b18a..b88273e 100644
--- a/modules/system/system.base.css
+++ b/modules/system/system.base.css
@@ -137,7 +137,8 @@ div.tree-child-horizontal {
  * @see tableheader.js
  */
 table.sticky-header {
-  background-color: #fff;
+  backgroundr: transparent;
+  display: block;
   margin-top: 0;
 }