JSFiddle - React, Tailwind, and code Playground

by scruffles

HTML

<div class="parent">
    <div class="centered"/>
</div>

CSS

.parent {
    height: 500px;
    border: 1px solid black;
}
.centered {
    height: 50px;
    width: 50px;
    position: relative;
    top: 50%;
    background-color: red;
}