window.onload = function() {
  window.editor = CodeMirror.fromTextArea(code, {
      mode: "htmlmixed",
      lineNumbers: true,
      lineWrapping: false,
      theme: 'dracula',
      autoCloseTags: true,
      foldGutter: {
          rangeFinder: new CodeMirror.fold.combine(CodeMirror.fold.brace, CodeMirror.fold.comment)
      },
      gutters: ["CodeMirror-linenumbers", "CodeMirror-foldgutter"]
  });
};