Update app.py

app.py

@@ -40,7 +40,7 @@ with gr.Blocks(
             with gr.Row():       
                 message = gr.Textbox(label="Message", scale=10)
                 message.submit(generate_response, inputs=[model_dropdown, message, chatbot], outputs=[message, chatbot])
-                submit_button = gr.Button("Submit", size="sm", scale=1)
+                submit_button = gr.Button("Submit", scale=1)
                 submit_button.click(generate_response, inputs=[model_dropdown, message, chatbot], outputs=[message, chatbot])
 
             clear = gr.ClearButton([message, chatbot])