Update app.py

app.py

@@ -272,6 +272,11 @@ with gr.Blocks(css=css, fill_height=True) as demo:
                     label="post_process_mask",
                     value=False
                 )
+            del_background.change(
+                fn=lambda x: gr.Row.update(visible=x),
+                inputs=del_background,
+                outputs=rembg_params
+            )
             
         with gr.Row():
             controlnet_checkbox = gr.Checkbox(