slideUp.js

let slide = document.querySelectorAll('.slideUp');

slide.forEach(function (el) {
    el.addEventListener('click', function () {
        let parent = el.parentElement;
        let links = parent.querySelectorAll('.link');
        let rotationTranform = 'rotate(45deg)';
        let isRotated = el.style.transform === rotationTranform;
        if (!isRotated) {
            el.style.transform = rotationTransform;
        } else {
            el.style.transform = '';
        }
        links.forEach(function (link) {
            link.classList.toggle('hidden');
        });
    });
});