diff --git a/12/style.css b/12/style.css
index b2d8dae..5fd5350 100644
--- a/12/style.css
+++ b/12/style.css
@@ -6,7 +6,7 @@ body{
 }
 
 .intro{
-  margin:10%x;
+  margin:10%;
 }
 
 .page_title{