text: PR.registerLangHandler(
      PR.createSimpleLexer(
          [["pln", /^[\t\n\f\r ]+/, null, " \t\r\n\u000c"]],
          [
              ["str", /^"(?:[^\n\f\r"\\]|\\(?:\r\n?|\n|\f)|\\[\S\s])*"/, null],
              ["str", /^'(?:[^\n\f\r'\\]|\\(?:\r\n?|\n|\f)|\\[\S\s])*'/, null],
              ["lang-css-str", /^url\(([^"')]+)\)/i],
              [
                  "kwd",
                  /^(?:url|rgb|!important|@import|@page|@media|@charset|inherit)(?=[^\w-]|$)/i,
                  null,
              ],
              [
                  "lang-css-kw",
                  /^(-?(?:[_a-z]|\\[\da-f]+ ?)(?:[\w-]|\\\\[\da-f]+ ?)*)\s*:/i,
              ],
              ["com", /^\/\*[^*]*\*+(?:[^*/][^*]*\*+)*\//],
              ["com", /^(?:<\!--|--\>)/],
              ["lit", /^(?:\d+|\d*\.\d+)(?:%|[a-z]+)?/i],
              ["lit", /^#[\da-f]{3,6}\b/i],
              ["pln", /^-?(?:[_a-z]|\\[\da-f]+ ?)(?:[\w-]|\\\\[\da-f]+ ?)*/i],
              ["pun", /^[^\s\w"']+/],
          ]
      ),
      ["css"]
  );
  PR.registerLangHandler(
      PR.createSimpleLexer(
          [],
          [["kwd", /^-?(?:[_a-z]|\\[\da-f]+ ?)(?:[\w-]|\\\\[\da-f]+ ?)*/i]]
      ),
      ["css-kw"]
  );
  PR.registerLangHandler(PR.createSimpleLexer([], [["str", /^[^"')]+/]]), [
      "css-str",
  ]);
  