JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/unveil/1.3.0/jquery.unveil.js"></script>
<div>
    <img  data-src="https://unsplash.it/1000/500?image=631" width="1000" height="500" />
</div>

CSS

div {
    border: 1px solid blue;
    width: 50%;
    padding: 10px;
    margin-top: 1000px;
}
img {
    border: 1px solid red;
    max-width: 100%;
    height: 100%;
}

JavaScript

$(document).ready(function() {
  $("img").unveil();
});