diff --git a/src/components/Folder/index.tsx b/src/components/Folder/index.tsx
index 8282375d..aa51c1b9 100644
--- a/src/components/Folder/index.tsx
+++ b/src/components/Folder/index.tsx
@@ -700,7 +700,7 @@ export default function Folder({ data: _data }: { data?: Agent }) {
 
         {/* content */}
         <div
-          className={`min-h-0 flex-1 ${selectedFile?.type === 'html' && !isShowSourceCode ? 'overflow-hidden' : 'scrollbar overflow-y-auto'}`}
+          className={`flex min-h-0 flex-1 flex-col ${selectedFile?.type === 'html' && !isShowSourceCode ? 'overflow-hidden' : 'scrollbar overflow-y-auto'}`}
         >
           <div
             className={`flex min-h-full flex-col ${selectedFile?.type === 'html' && !isShowSourceCode ? '' : 'p-6'} file-viewer-content`}
diff --git a/src/style/index.css b/src/style/index.css
index f769c6c8..0d39423c 100644
--- a/src/style/index.css
+++ b/src/style/index.css
@@ -542,7 +542,7 @@ code {
 
 /* Scoped file viewer: prevent file content CSS from affecting sidebar and app layout */
 .file-viewer-content {
-  contain: layout style;
+  contain: style;
   isolation: isolate;
 }