Update app.py

app.py

@@ -64,7 +64,8 @@ theme = gr.themes.Glass(primary_hue=gr.themes.colors.gray,
                secondary_hue=gr.themes.colors.sky,
                text_size=gr.themes.sizes.text_lg).set(slider_color="#b2dcf3")
 
-with gr.Blocks(theme=theme) as demo:
+with gr.Blocks(theme=theme,
+               css=".gradio-container {background-color: #9ea9a9}") as demo:
             
     gr.Markdown('''
             <div>