Update app.py

app.py

@@ -442,10 +442,11 @@ with gr.Blocks() as demo:
                     type="filepath",
                     interactive=False
                 )
-                
-                with gr.Row():
-                    checkpoint = gr.Dropdown(label="Checkpoint", choices=["tiny", "small", "base-plus", "large"], value="tiny")
-                    submit_btn = gr.Button("Get Mask", size="lg")
+
+                with gr.Group():
+                    with gr.Row():
+                        checkpoint = gr.Dropdown(label="Checkpoint", choices=["tiny", "small", "base-plus", "large"], value="tiny")
+                        submit_btn = gr.Button("Get Mask", size="lg")
 
                 with gr.Accordion("Your video IN", open=True) as video_in_drawer:
                     video_in = gr.Video(label="Video IN", format="mp4")