    var navCollapse = document.querySelector('.navbarm__collapse');

      if (navCollapse) {
        var dataOpen = navCollapse.getAttribute('data-open');

        if (dataOpen === 'true') {
          navCollapse.setAttribute('data-open', 'false');
          navCollapse.style.maxHeight = 0;
          navCollapseBtn.classList.remove('is-active');
        } else {
          navCollapse.setAttribute('data-open', 'true');
          navCollapse.style.maxHeight = navCollapse.scrollHeight + "px";
          navCol