Update app.py

app.py

@@ -53,8 +53,8 @@ css = """
 }
 """
 
-with gr.Blocks(css=css) as demo:
-    with gr.Column(elem_id="col-container", fill_height=True):
+with gr.Blocks(css=css, fill_height=True) as demo:
+    with gr.Column(elem_id="col-container"):
         gr.Markdown(" # Text-to-Image demo")
 
         with gr.Row():