JSFiddle - React, Tailwind, and code Playground

HTML

<div></div>

CSS

div {
    height: 100px;
    width: 10px;
    background: #FF0000;
}

JavaScript

var width = 10;
var div = $('div');
function grow() {
    div.css('width', width + 'px');
    width += 0.1;
    if (width > 100) {
        clearInterval(int);
    }
}
var int = setInterval(grow, 100);