text: function toggle() {
      let onclick = document.getElementsByClassName('button')[0];
      if (onclick.textContent === 'More'){
          onclick.textContent = 'Less';
  
          document.getElementById('extra').style.display = 'block';
      }else {
          onclick.textContent = 'More';
  
          document.getElementById('extra').style.display = 'none';
      }
  }