Update app.py

app.py

@@ -126,7 +126,7 @@ with gr.Blocks(css=STYLE) as block:
   )
   
   with gr.Row():
-    with gr.Column(scale=1, min_width=100):
+    with gr.Column(scale=1, min_width=100, elem_id="left-pane"):
       first = gr.Button("1st", elem_classes=["custom-btn"])
       second = gr.Button("2nd", elem_classes=["custom-btn"])
       third = gr.Button("3rd", elem_classes=["custom-btn"])