move to demo

app.py

@@ -84,8 +84,8 @@ css="""
     max-width: 640px;
 }
 """
-demo_blocks = gr.Blocks(css=css, elem_id="demo-container")
-with demo_blocks as demo:
+
+with gr.Blocks(css=css, elem_id="demo-container") as demo:
     with gr.Column():
         gr.HTML(read_file("demo_header.html"))
     with gr.Row():
@@ -132,4 +132,4 @@ with demo_blocks as demo:
         """
     )
 
-demo_blocks.launch()
+    demo.launch()