JSFiddle - React, Tailwind, and code Playground

by Robert Barros

HTML

<div id="container">
    <span></span><div class="outer">
        <span></span><div class="inner">
            
        </div>
    </div>
</div>

CSS

html, body {
    height: 100%;
    margin: 0;
    padding: 0; }
#container { 
    text-align: center;
    height: 100%; }
.outer {
    width: 100px;
    height: 200px;
    padding: 0;
    border: 1px solid #000;
    vertical-align: middle;
    display: inline-block; }
span { 
    height: 100%;
    vertical-align: middle;
    display: inline-block; }
.inner {
    background: red;
    width: 30px;
    height: 20px;    
    vertical-align: middle;
    display: inline-block; }