JSFiddle - React, Tailwind, and code Playground

HTML

<div style="
margin: 100px;
width:  100px;
height:  100px;
background: blue;
border: solid 1px red;
position:  relative;">
    <div style="
    width: 100px;
    height: 100px;
    background:  green;
    position: absolute;
    left:  50px;
    top: 50px;">
    </div>
</div>