Modify column count.

app.py

@@ -2,7 +2,7 @@ import gradio as gr
 import pandas as pd
 from apscheduler.schedulers.background import BackgroundScheduler
 from gradio.themes import Base, colors, sizes
-from gradio_leaderboard import ColumnFilter, Leaderboard, SelectColumns
+from gradio_leaderboard import Leaderboard, SelectColumns
 
 from src.about import CITATION_BUTTON_LABEL, CITATION_BUTTON_TEXT, EVALUATION_QUEUE_TEXT, INTRODUCTION_TEXT, TITLE
 from src.datamodel.data import F1Data
@@ -60,7 +60,7 @@ def init_leaderboard(dataframe: pd.DataFrame):
     if dataframe is None:
         raise ValueError("Leaderboard DataFrame is None.")
 
-    return Leaderboard(
+    lb = Leaderboard(
         value=dataframe,
         datatype=[c.type for c in fields(AutoEvalColumn)],
         select_columns=SelectColumns(
@@ -73,6 +73,8 @@ def init_leaderboard(dataframe: pd.DataFrame):
         bool_checkboxgroup_label="Hide models",
         interactive=False,
     )
+    lb.col_count = (1, "fixed")
+    return lb
 
 
 def add_solution_cbk(