JSFiddle - React, Tailwind, and code Playground

by Alex

HTML

<div class="box">
    <div class="box-inner"></div>
</div>

CSS

html {
	min-height: 100%;
	font-family: sans-serif;
	display: -webkit-flex;
	display: flex;
	-webkit-flex-direction: column;
	flex-direction: column;
}
body {
	margin: 0;
    padding: 15px 0;
	display: -webkit-flex;
	display: flex;
	-webkit-flex-direction: column;
	flex-direction: column;
	-webkit-flex: auto;
	flex: auto;
}
.box {
    background: #eee;
    margin: auto;
    padding: 10px;
	-webkit-flex: none;
	flex: none;
	position: relative;
    border-radius: 3px;
    box-shadow: 0 0 10px rgba(0,0,0,.5);
}
.box-inner {
    background: #0076A3;
    width: 600px;
    height: 350px;
}