function css(Prism) {
  ;(function (Prism) {
    var string =
      /(?:"(?:\\(?:\r\n|[\s\S])|[^"\\\r\n])*"|'(?:\\(?:\r\n|[\s\S])|[^'\\\r\n])*')/
    Prism.languages.css = {
      comment: /\/\*[\s\S]*?\*\//,
      atrule: {
        pattern: /@[\w-](?:[^;{\s]|\s+(?![\s{]))*(?:;|(?=\s*\{))/,
        inside: {
          rule: /^@[\w-]+/,
          'selector-function-argument': {
            pattern:
              /(\bselector\s*\(\s*(?![\s)]))(?:[^()\s]|\s+(?![\s)])|\((?:[^()]|\([^()]*\))*\))+(?=\s*\))/,
            lookbehind: true,
            alias: 'selector'
          },
          keyword: {
            pattern: /(^|[^\w-])(?:and|not|only|or)(?![\w-])/,
            lookbehind: true
          } // See rest below
        }
      },
      url: {
        // https://drafts.csswg.org/css-values-3/#urls
        pattern: RegExp(
          '\\burl\\((?:' +
            string.source +
            '|' +
            /(?:[^\\\r\n()"']|\\[\s\S])*/.source +
            ')\\)',
          'i'
        ),
        greedy: true,
        inside: {
          function: /^url/i,
          punctuation: /^\(|\)$/,
          string: {
            pattern: RegExp('^' + string.source + '$'),
            alias: 'url'
          }
        }
      },
      selector: {
        pattern: RegExp(
          '(^|[{}\\s])[^{}\\s](?:[^{};"\'\\s]|\\s+(?![\\s{])|' +
            string.source +
            ')*(?=\\s*\\{)'
        ),
        lookbehind: true
      },
      string: {
        pattern: string,
        greedy: true
      },
      property: {
        pattern:
          /(^|[^-\w\xA0-\uFFFF])(?!\s)[-_a-z\xA0-\uFFFF](?:(?!\s)[-\w\xA0-\uFFFF])*(?=\s*:)/i,
        lookbehind: true
      },
      important: /!important\b/i,
      function: {
        pattern: /(^|[^-a-z0-9])[-a-z0-9]+(?=\()/i,
        lookbehind: true
      },
      punctuation: /[(){};:,]/
    }
    Prism.languages.css['atrule'].inside.rest = Prism.languages.css
    var markup = Prism.languages.markup
    if (markup) {
      markup.tag.addInlined('style', 'css')
      markup.tag.addAttribute('style', 'css')
    }
  })(Prism)
}
@param {string} source
@param {string} flags
@returns {RegExp}