Update app.py

app.py

@@ -374,7 +374,7 @@ with gr.Blocks(css=STYLE, theme=gr.themes.Soft()) as demo:
     gr.Markdown("# Let's explore papers with auto generated Q&As")
     
     with gr.Column(elem_id="control-panel", elem_classes=["group"]):
-        with gr.Row():
+        with gr.Column():
             with gr.Row():
                 year_dd = gr.Dropdown(
                     sorted_year,