update.

web-demos/hugging_face/app.py

@@ -554,7 +554,7 @@ with gr.Blocks(theme=gr.themes.Monochrome(), css=css) as iface:
                         visible=False,
                         min_width=100,
                         scale=1,)
-                    with gr.Row(scale=2, elem_classes="mask_button_group"):
+                    with gr.Row(elem_classes="mask_button_group"):
                         Add_mask_button = gr.Button(value="Add mask", interactive=True, visible=False, elem_classes="add_button")
                         remove_mask_button = gr.Button(value="Remove mask", interactive=True, visible=False, elem_classes="remove_button")
                         clear_button_click = gr.Button(value="Clear clicks", interactive=True, visible=False, elem_classes="clear_button")