JSFiddle - React, Tailwind, and code Playground

by foreyez

HTML

<div>

</div>

CSS

div {
        width:200px;
        height:200px;
        top:calc(50% - 100px); /* 100px is half the height..*/
        position:absolute;
        background:red;
    }
    
    html,body {
      width:100%;
      height:100%;
      background:green;
    }