class Capybara::Server::AnimationDisabler

def insert_disable(html, nonces)
  html.sub(%r{(</head>)}, "<style #{nonces['style-src']}>#{disable_css_markup}</style>\\1")
      .sub(%r{(</body>)}, "<script #{nonces['script-src']}>#{disable_js_markup}</script>\\1")
end