JSFiddle - React, Tailwind, and code Playground

HTML

<div>
  <div>
  </div>
</div>
<div>
  <span>
  </span>
</div>

CSS

body > div {
    width: 150px;
    height: 150px;
    background: black;
    margin-top: 40px;
    display: inline-block;
    vertical-align: bottom;
}

div > div,
div > span{
    border-radius: 5px;
    padding: 10%;
    background: red;
}