JSFiddle - React, Tailwind, and code Playground

HTML

<div>
    <div id="d1">
    </div>
    <div id="d2">
    </div>
</div>

CSS

#d1{
   background:blue; 
   position:absolute;
   height: 100px;
   width:100px;
   top:50px;
   left:50px;
}
#d2{
    background:red;
    height: 200px;
    width: 200px;
    position: relative;
}