document.addEventListener('DOMContentLoaded', () => {
  const burgers = Array.prototype.slice.call(document.querySelectorAll('.navbar-burger'), 0);

  burgers.forEach((burger) => {
    burger.addEventListener('click', () => {
      const target = burger.dataset.target;
      const menu = document.getElementById(target);
      burger.classList.toggle('is-active');
      if (menu) {
        menu.classList.toggle('is-active');
      }
    });
  });
});