Update app.py

app.py

@@ -126,7 +126,7 @@ custom_css = """
 }
 """
 
-with gr.Blocks(css=custom_css) as demo:
+with gr.Blocks(css=custom_css, theme=gr.themes.Default()) as demo:
     # Interface setup with input and output
     with gr.Row():
         with gr.Column():
@@ -142,4 +142,4 @@ with gr.Blocks(css=custom_css) as demo:
     btn.click(fn=remove_background_wrapper, inputs=image_input, outputs=[
         output_foreground, output_background, output_foreground_mask, output_background_mask])
 
-    demo.launch(theme="default", debug=True)
+    demo.launch(debug=True)