let animatedArr = document.querySelectorAll('[data-animated]');
for(let i = 0; i <= animatedArr.length - 1; i++) {
let animatedElem = animatedArr[i];
document.addEventListener('scroll', function () {
let scroll = window.pageYOffset || document.documentElement.scrollTop;
if(scroll >= animatedElem.offsetTop){
animatedElem.classList.add('animated');
}
})
}