diff --git a/12/style.css b/12/style.css
index 4ee2d1d..161267a 100644
--- a/12/style.css
+++ b/12/style.css
@@ -433,7 +433,7 @@ a:hover{
   width: 100%;
   height: 100%;
   border: none;
-  background-color: none;
+  background-color: black;
 }