diff --git a/12/style.css b/12/style.css
index acd101e..cfb103f 100644
--- a/12/style.css
+++ b/12/style.css
@@ -488,7 +488,7 @@ a:hover{
   z-index:1000;
 }
 
-iframe.hidden {
+etherpad_drag.hidden {
 	display:none;
     overflow: hidden;
 }