diff --git a/themes/seven/vertical-tabs.css b/themes/seven/vertical-tabs.css
index d61ff5e3676369560fef5ef91aaba91899cfd7d4..f73a73f1a67e00b3503b6a65e5a5c75d88f98106 100644
--- a/themes/seven/vertical-tabs.css
+++ b/themes/seven/vertical-tabs.css
@@ -7,6 +7,7 @@ div.vertical-tabs {
   background: #fff url(images/fc.png) repeat-y 0 0;
   border: 1px solid #ccc;
   margin: 10px 0;
+  position: relative;
 }
 div.vertical-tabs fieldset {
   border: 0;