Update app.py

app.py

@@ -78,7 +78,7 @@ def process_video(video_file, model_id, threshold, progress=gr.Progress()):
     return output_video, frame_gallery
 
 # Gradio interface
-with gr.Blocks(theme=gr.themes.Ocean()) as demo:
+with gr.Blocks(theme=gr.themes.Base()) as demo:
     gr.Markdown(
         """
         <div max-width: 800px; margin: 0 auto;">