use smaller left pad

app.py

@@ -125,7 +125,7 @@ video_paths = []
 row_heights = [""]*num_rows
 gt_viz_indices = []
 if len(model_viz) > 1:
-    left_pad = font_size*max([len(viz['display_name']) for viz in model_viz[1:]]) + padding*2
+    left_pad = (font_size*0.7)*max([len(viz['display_name']) for viz in model_viz[1:]]) + padding*2
 else:
     left_pad = 0
 for row_idx in range(num_rows):