diff --git a/assets/style.css b/assets/style.css
index a184c61..51e4ae1 100644
--- a/assets/style.css
+++ b/assets/style.css
@@ -154,6 +154,7 @@ ul.navpage_list {
     transition: max-height .3s ease, border .325s ease !important;
     z-index: 2;
     position: fixed;
+    background: #000000aa;
 }
 
 .back {