diff --git a/src/components/HTMLViewer.tsx b/src/components/HTMLViewer.tsx
index 2d9a5b9..958e1f0 100644
--- a/src/components/HTMLViewer.tsx
+++ b/src/components/HTMLViewer.tsx
@@ -28,7 +28,7 @@ export function HTMLViewer({ className = '' }: HTMLViewerProps) {
         <TTSPlayer />
       </div>
       <div className="flex-1 overflow-auto">
-        <div className={`px-4 ${isTxtFile ? 'whitespace-pre-wrap font-mono text-sm' : 'prose prose-base'}`}>
+        <div className={`min-w-full px-4 ${isTxtFile ? 'whitespace-pre-wrap font-mono text-sm' : 'prose prose-base'}`}>
           {isTxtFile ? (
             currDocData
           ) : (