diff --git a/assets/style.css b/assets/style.css
index 7196494..b9b131b 100644
--- a/assets/style.css
+++ b/assets/style.css
@@ -214,6 +214,7 @@ ul.navpage_list
     }
     #navsite_list {
         display: none;
+        position: fixed;
         flex-direction: column;
     }