Update app.py

app.py

@@ -127,7 +127,7 @@ topics = """
 """
 
 # Setup the Gradio Blocks interface with custom layout components
-with gr.Blocks(theme='JohnSmith9982/small_and_pretty') as demo:
+with gr.Blocks(theme='gstaff/xkcd') as demo:
     gr.Markdown(welcome_message)  # Display the formatted welcome message
     with gr.Row():
         with gr.Column():