JSFiddle - React, Tailwind, and code Playground

HTML

<div style="z-index: 2147483647;  top:0;  left:0;  background: red;"></div>
<div style="z-index: 2999999999;  top:1em;  left:1em;  background: blue;"></div>
<div style="z-index: 2147483647;  top:2em;  left:2em;  background: green;"></div>

CSS

div {
    width: 100px;
    height: 100px;
	position: absolute;
}