JSFiddle - React, Tailwind, and code Playground

HTML

<body>
    <div id="div"></div>
</body>

CSS

#div {
    width: 200px;
    height: 1000px;
    background: pink;
    background: -webkit-linear-gradient(red, blue);
    padding-top: 100px;
    font-size: 80px;
}

JavaScript

setTimeout(function () {
    var y = Date.now() % 100;
    window.scrollTo(0, y);
    document.getElementById("div").innerHTML += y + " vs " + document.body.scrollTop;
}, 100);