JSFiddle - React, Tailwind, and code Playground

by blesh

HTML

<span class="center">
    <span class="line-height-zero">
        <div class="vertical-middle">arbitrary stuff here.</div>
    </span>
</span>

CSS

html, body {
    height: 100%;
    width: 100%;
    padding: 0;
    margin: 0;
    overflow: hidden;
}
.center {
    position: relative;
    display: block;
    top: 50%;
    margin-top: -1000px;
    height: 2000px;
    text-align: center;
    line-height: 2000px;
}
.line-height-zero {
    line-height: 0;
}
.vertical-middle {
    display: inline-block;
    line-height: 1em;
    vertical-align: middle;
}