Update app.py

app.py

@@ -281,7 +281,7 @@ start_cleaner = """async() => {
 
     } else {
         max_height = 800;
-        image_upload.setAttribute('style', 'min-height: ' + max_height + 'px; overflow-x: overlay');
+        image_upload.setAttribute('style', 'min-height: ' + max_height + 'px; overflow: overlay');
         data_image.setAttribute('style', 'height: ' + max_height + 'px');
         data_image_div.setAttribute('style', 'min-height: ' + max_height + 'px');