Update app.py

app.py

@@ -90,6 +90,10 @@ with gr.Blocks(css=CSS) as demo:
         fn=stream_chat,
         chatbot=chatbot,
         fill_height=True,
+        theme="soft",
+        retry_btn=None,
+        undo_btn="Delete Previous",
+        clear_btn="Clear",
         additional_inputs_accordion=gr.Accordion(label="⚙️ Parameters", open=False, render=False),
         additional_inputs=[
             gr.Slider(