JSFiddle - React, Tailwind, and code Playground

by Do ing93

HTML

<div class='container'>
	<div class='dummy'></div>
	<div class='content'>content</div>
</div>

CSS

.container{
		background-color: silver;
		width:100%;
		position:relative;
		display: inline-block;
	}
	.dummy{
		margin-top: 100%;
	}
	.content{
		position:absolute;
		left:0;
		right:0;
		top:0;
		bottom: 0;
	}