diff --git a/docs/.vitepress/devui-theme/components/PageToc.vue b/docs/.vitepress/devui-theme/components/PageToc.vue
index d1666e33113c73d4b722ba372eb1648977074e37..ecd6c29a7224997545cc58de04ca5650fd35e086 100644
--- a/docs/.vitepress/devui-theme/components/PageToc.vue
+++ b/docs/.vitepress/devui-theme/components/PageToc.vue
@@ -36,7 +36,7 @@ useActiveSidebarLinks(container, marker)
   position: fixed;
   top: 50px;
   right: 0;
-  height: 100%;
+  height: 90%;
   z-index: 1;
 
   .devui-fast-forward {