Update app.py

app.py

@@ -58,7 +58,8 @@ with gr.Blocks(css="#chatbot{height:300px} .overflow-y-auto{height:500px}") as r
     state = gr.State([])
     with gr.Row():
         txt = gr.Textbox(show_label=False, placeholder="请输入你的问题").style(container=False)
-    submit_btn = gr.Button("提交",variant="primary")
+    #submit_btn = gr.Button("提交",variant="primary")
+    submit_btn = gr.Button("提交",variant="secondary")
     txt.submit(answer, [txt, state], [chatbot, state])
     txt.submit(reset_user_input, [], [txt])
     submit_btn.click(answer, [txt, state], [chatbot, state])