code: def setup(app):
      # Add custom CSS
      app.add_css_file("style.css")
  
file_path: vispy/doc/conf.py
imports: from datetime import date
  import sys
  import os
  import re
  import warnings
  import vispy
  from sphinx_gallery.sorting import FileNameSortKey
label_desc: Use image node_id 2 for calling a global function with example usage: setup(app) without return types