JSFiddle - React, Tailwind, and code Playground

HTML

<span>something here</span>

CSS

body {
    height: 100%;
    width: 100%; 
}

span {
    position: absolute;
    border: 1px red solid;
    height: 30%;
    width: 40%;
    text-align: center;
    vertical-align: middle;
    left: 0;
    margin: auto;
    top: 0;
    right: 0;
    
}