3d flip
HTML
<div class="slider">
<div class="item">
<img src="https://source.unsplash.com/EbuaKnSm8Zw/800x533" alt="">
</div>
<div class="item">
<img src="https://source.unsplash.com/EbuaKnSm8Zw/800x533" alt="">
</div>
</div>
JavaScript
const slider = document.querySelector('.slider');
alert(slider.children);