diff --git a/deepmodeling_sphinx/banner.css b/deepmodeling_sphinx/banner.css
index 4c2f4b4..8c20c98 100644
--- a/deepmodeling_sphinx/banner.css
+++ b/deepmodeling_sphinx/banner.css
@@ -550,14 +550,6 @@ under MIT license
   border-color: var(--dm-header-border);
 }
 
-.bd-sidebar-primary {
-  overflow: visible;
-}
-
-.bd-sidebar-primary .sidebar-primary-items__start {
-  overflow: visible;
-}
-
 .bd-links .current > a,
 .bd-links .active > a,
 .bd-toc .active > a {