// https://highlightjs.org/static/demo/
// Run the following in browser console and paste the result in the 404.html file
let styles = {};
[...document.getElementsByTagName('link')].forEach(link => {
  if (link.href.startsWith('https://highlightjs.org/static/demo/styles/')) {
    data[link.href.slice(43, -4)] = link.title;
  }
})
copy(styles);