Update app.py

app.py

@@ -149,7 +149,7 @@ def dataset_converter(input_file, conversion_type, parquet_url):
     )
     return output_file, info_message
 
-with gr.Blocks(css=custom_css, title="Datasets Convertor", theme="Nymbo/Nymbo_Theme") as demo:
+with gr.Blocks(css=css, title="Datasets Convertor", theme="Nymbo/Nymbo_Theme") as demo:
     gr.Markdown("# Datasets Convertor 🚀")
     gr.Markdown(
         "Upload a CSV or Parquet file (or provide a Parquet file URL for Parquet to JSONL/XLS conversion) "