Update app.py

app.py

@@ -94,6 +94,12 @@ examples=[["I'm planning a vacation to Japan. Can you suggest a one-week itinera
           ["What are some unique features of Rust that make it stand out compared to other systems programming languages like C++?", None, None, None, None, None,],
          ]
 
+css="""
+#col-container{
+    max-width: 640px;
+}
+"""
+
 gr.ChatInterface(
     fn=generate,
     chatbot=gr.Chatbot(show_label=False, show_share_button=False, show_copy_button=True, likeable=True, layout="panel"),
@@ -101,4 +107,6 @@ gr.ChatInterface(
     title="Chat with Santa",
     #examples=examples,
     concurrency_limit=20,
+    elem_id="chat-interface",
+    css=css
 ).launch(show_api=False)