diff --git a/src/css/components/menu.scss b/src/css/components/menu.scss
index 6f7aec1..80d557c 100644
--- a/src/css/components/menu.scss
+++ b/src/css/components/menu.scss
@@ -180,7 +180,7 @@ html[data-theme="dark"] {
     }
 
     .theme-doc-sidebar-item-category-level-1 {
-      .menu__list-item-collapsible {
+      & > .menu__list-item-collapsible {
         font-size: 0.6875rem;
         font-weight: 700;
         letter-spacing: 0.0825rem;