diff --git a/style.css b/style.css
index 048f01d..21bcb6b 100644
--- a/style.css
+++ b/style.css
@@ -13,6 +13,7 @@ header{
   padding: 20px;
   width: 100%;
   height: 30px;
+  z-index: 1;
 }
 
 .left_area h3{
@@ -387,4 +388,4 @@ padding:10px 20px;
 .vis:visited{
   background:black;
   padding-left:60px;
-}
\ No newline at end of file
+}