Update readonly page

example/lib/pages/read_only_page.dart

@@ -61,15 +61,12 @@ class _ReadOnlyPageState extends State<ReadOnlyPage> {
         focusNode: _focusNode,
       );
     }
-    return Padding(
+    return Container(
-      padding: const EdgeInsets.all(8),
-      child: Container(
       decoration: BoxDecoration(
-          color: Colors.white,
         border: Border.all(color: Colors.grey.shade200),
       ),
+      padding: const EdgeInsets.all(8),
       child: quillEditor,
-      ),
     );
   }