Update demo_gradio.py

demo_gradio.py

@@ -182,7 +182,7 @@ with gr.Blocks(css=css) as demo:
                 with gr.Row():
                     input_image = gr.Image(type="pil", label="input image")
                     input_image2 = gr.Image(type="pil", label = "material examplar")
-            submit_btn = gr.Button("Submit")
+                submit_btn = gr.Button("Submit")
             with gr.Column():
                 output_image = gr.Image(label="transfer result")
     submit_btn.click(fn=greet, inputs=[input_image, input_image2], outputs=[output_image])