JSFiddle - React, Tailwind, and code Playground

HTML

<div class="cn">
    <div class="inner">
        test
    </div>
</div>

CSS

div.cn {
    display: table-cell;
    width: 500px;
    height: 500px;
    background: gray;
    vertical-align: middle;
    text-align: center;
}

div.inner {
    display: inline-block;
    width: 200px;
    height: 200px;
    background: red;
}