refactor: polish

app.py

@@ -45,12 +45,13 @@ with gr.Blocks() as demo:
             )
 
     with gr.Tab("Coming Soon"):
-        with gr.Row(height=250, max_height=250):
+        with gr.Row():
             gr_df = gr.Dataframe(
                 value=ptbxl_df,
                 interactive=False,
                 max_height=200,
                 label="All PTB-XL v1.3.0 data (https://physionet.org/content/ptb-xl/1.0.3/ptbxl_database.csv). You can refer to the following URL(https://physionet.org/content/ptb-xl/1.0.3/scp_statements.csv) to understand what 'scp_codes' represent.",
+                elem_classes=["scrollable"],
             )
 
         with gr.Row():