diff --git a/12/style.css b/12/style.css
index 207597b..a31ef3e 100644
--- a/12/style.css
+++ b/12/style.css
@@ -421,7 +421,7 @@ a:hover{
 }
 
 #etherpad.hidden {
-  display: block;
+  display: none;
   width: 100%;
   height: 10%;
   font-family: Roboto Mono;