JSFiddle - React, Tailwind, and code Playground

by Neal

HTML

<div class="outer">
<div class="inner"></div>
</div>

CSS

.outer {
    width: 500px;
    height: 500px;
    border: 1px solid red;
}
.inner {
    width: 50%;
    height: 50%;
    background: blue;
    margin: 0 auto;
    margin-top: 25%;
}