add spaces

app.py

@@ -707,7 +707,9 @@ with gr.Blocks(css=css) as demo:
                 
         with gr.Row():
             submit_btn = gr.Button("Generate", variant='primary')
-            check_btn = gr.Button("Check Existing Results", variant='primary')
+
+        with gr.Row():
+            check_btn = gr.Button("Check Existing Results", variant='secondary')
 
         with gr.Row():
             gr.Examples(label='Sample Prompts', examples=examples, inputs=[prompt_in, target_indices, ddim_edit, seed, ddim_steps, unconditional_guidance_scale, video_fps, save_fps, height_ratio, width_ratio, radio_mode, dropdown_diy, *frame_indices, *h_positions, *w_positions])