text: // Java which is created to toggle menu button
  (() => {
      const button = document.querySelector('.js-main-navigation__mobile-button');
      const menu = document.querySelector('.js-main-navigation__menu');
  
      const toggleClass = () => {
          menu.classList.toggle('main-navigation__menu--open');
      };
      button.addEventListener('click', toggleClass);
      menu.addEventListener('click', toggleClass);
  })();