Update app.py

app.py

@@ -132,12 +132,12 @@ theme = gr.themes.Monochrome(
     
     
 )
-custom_css = "
+custom_css = """
 body {
-    background-image: url('file/sea.jpg')
-    background-size: cover
+    background-image: url('https://huggingface.co/spaces/AquaGuard/chess-chatbot/resolve/main/sea');
+    background-size: cover;
 }
-"
+"""
 # Setup the Gradio Blocks interface with custom layout components
 with gr.Blocks(theme = theme ) as demo:
     gr.Markdown(welcome_message)  # Display the formatted welcome message