Update app.py

app.py

@@ -65,7 +65,7 @@ tabbed_interface = gr.TabbedInterface(
     ["Speech-to-text", "Text-to-speech", "Language Identification"],
 )
 
-with gr.Blocks() as demo:
+with gr.Blocks(css=css, theme=theme) as demo:
     theme="Nymbo/Nymbo_Theme"
     gr.Markdown(
         "<p align='center' style='font-size: 20px;'>MMS</p>"