diff --git a/12/style.css b/12/style.css
index d1646ad..755a05c 100644
--- a/12/style.css
+++ b/12/style.css
@@ -38,6 +38,7 @@ body{
   width:100%;
   font-family: Roboto Mono;
   font-size: 24px;
+  overflow: hidden;
 
 }