Update app.py

app.py

@@ -255,7 +255,7 @@ class ChatDocumentQA:
 
     def gradio_interface(self) -> None:
         """Create a Gradio interface for the chatbot."""
-        with gr.Blocks(css = "style.css" ,theme="Medguy/randomtheme") as demo:
+        with gr.Blocks(css = "style.css" ,theme="shivi/calm_seafoam") as demo:
             
             gr.HTML("""<center class="darkblue" text-align:center;padding:30px;'><center>
             <center><h1 class ="center" style="color:#fff"></h1></center>