   </label>
          <button id=go>Apply role</button>
          <output></output>
          <script>
            var input = document.getElementById('test');
            var btn = document.getElementById('go');
            var body = document.querySelector('body');
            var html = document.querySelector('html');
            var head = document.querySelector('head');
            var output = document.querySelector('output')
            btn.addEventListener('click', function () {
              body.s