JSFiddle - React, Tailwind, and code Playground

HTML

<div class="aa">
  <div class="bb"></div>
</div>

CSS

* {
	padding: 0px;
	margin: 0px;
}

.aa {
	width: 500px;
	margin-left: auto;
	margin-right: auto;
	background-color: #E9A7A8;
}
.bb {
	height: 200px;
	margin: 50px;
	background-color: #AEEF8F;
}