Update app.py

app.py

@@ -695,7 +695,7 @@ body, .gradio-container {
 """
 
 # Build the Gradio interface with React-inspired design
-with gr.Blocks(css=custom_css, theme=gr.themes.Base(), title="NVIDIA Nemotron Nano 2 VL") as demo:
+with gr.Blocks(css=custom_css, theme=gr.themes.Ocean(), title="NVIDIA Nemotron Nano 2 VL") as demo:
     
     # Hidden state for API key
     api_key_state = gr.State("")