diff --git a/src/components/Sidebar.tsx b/src/components/Sidebar.tsx
index 34c1e9d..e5e8177 100644
--- a/src/components/Sidebar.tsx
+++ b/src/components/Sidebar.tsx
@@ -61,7 +61,7 @@ const SidebarContent: Component<SidebarContentProps> = (props) => {
 
       {/* 当前文件标题 */}
       <Show when={currentFileHeadings().length > 0}>
-        <div class="xl:fixed xl:top-20 xl:right-4">
+        <div class="xl:fixed xl:top-20 xl:right-4 xl:bottom-4 xl:overflow-y-auto xl:max-w-30 2xl:max-w-60">
           <h3 class="text-xs font-semibold text-gray-500 uppercase mb-2 px-2">
             本页
           </h3>