text: var trigger = document.getElementById("hamburger");
  var menu = document.getElementById("sidebar");
  var menuIsClosed = false;
  trigger.onclick = burgerTime;
  
  function burgerTime() {
      if (menuIsClosed == true) {
          trigger.className = 'hamburglar menu-open-button';
          menu.className = 'sidebar';
          menuIsClosed = false;
      } else {
          trigger.className = 'hamburglar menu-close-button';
          menu.className = 'sidebar sidebar-open';
          menuIsClosed = true;
      }
  }