Heatmap: Added CSS for ".leaderboard-heatmap"

app.py

@@ -527,6 +527,14 @@ tr.row_odd {
   transform: translateY(0px);
 }
 
+.leaderboard-heatmap {
+  overflow-x: scroll !important;
+}
+
+.leaderboard-heatmap .gradio-bokeh {
+  justify-content: normal;
+}
+
 """
 
 custom_js = """