JSFiddle - React, Tailwind, and code Playground

by Ukjin Yang

HTML

<div id="a">A</div>
<div id="b">B</div>

CSS

div{
    width:120px;height:120px;
    position:relative;
}
#a{
    background-color:green;
    color:white;
}
#b{
    background-color:yellow;
    top:-60px;left:60px;
    opacity:.8;
}