JSFiddle - React, Tailwind, and code Playground

HTML

<body>
<div id="myDiv" style="width:200px;height:200px;overflow:hidden;position:relative;">
    <p style="position:absolute;width:200px;height:200px;overflow:hidden;margin:0;padding:0">Lorem Ipsum is simply dummy text of the printing and typesetting industry. </p>
</div>
<button id="btn">Click this</button>
</body>

JavaScript

$("#btn").on("click", function(){
    $("#myDiv").animate({"width":"0px"}, 400);
});