JSFiddle - React, Tailwind, and code Playground

HTML

<div class="content">

			<header>

			</header>
		</div>

CSS

.content {
  width: 300px;
  height: 200px;
    background: blue;
  position: relative;
  clear: both;
}

.content header {
  width: 100px;
  height: 100px;
  margin-top: 50%;
  background: red;
  position: relative;
  float: left;

}