Update app.py

app.py

@@ -141,10 +141,10 @@ css = """
 with gr.Blocks(css=css) as demo:
     with gr.Column(elem_id="col-container"):
         gr.HTML(f"""
-        <h2 style="text-align: center;>
+        <h2 style="text-align: center;">
             PASD Gradio demo
         </h2>
-        <p style="text-align: center;>
+        <p style="text-align: center;">
             Pixel-Aware Stable Diffusion for Realistic Image Super-resolution and Personalized Stylization
         </p>