Update app.py

app.py

@@ -69,19 +69,21 @@ with gr.Blocks(title="Mistral Playground", css=css) as mistral_playground:
         with gr.Column(scale=11):
             gr.Markdown("Thinktecture Mistral AI Playground", elem_classes="header-text")
             
-    with gr.Row():
+    with gr.Row(variant='panel'):
         api_key = gr.Textbox(type='password', placeholder='Your Mistral AI API key', lines=1, label="Mistral AI API Key")
         model = gr.Radio(
             choices=["mistral-tiny", "mistral-small", "mistral-medium"],
             value="mistral-tiny",
         )
-    with gr.Row():
+    with gr.Row(variant='panel'):
         temperature = gr.Slider(minimum=0.01, maximum=1.0, value=0.2, step=0.1, label="Temperature")
         top_p = gr.Slider(minimum=0.01, maximum=1.0, step=0.01, label="Top P", value=0.95)
         max_tokens = gr.Slider(minimum=1, maximum=16000, step=500, label="Max Tokens", value=4000)
 
-    with gr.Row():
-        system = gr.Textbox(lines=10, label="System Message")
+    with gr.Row(variant='panel'):
+        system = gr.Textbox(lines=2, label="System Message", value="You are a helpfull AI assistant.")
+
+    with gr.Row(variant='panel'):
         gr.ChatInterface(
             respond_stream,
             additional_inputs=[