JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://raw.github.com/LeaVerou/prefixfree/master/prefixfree.min.js"></script>
<div id="daniel"></div>

CSS

#daniel{
 border-color: rgba(111,111,111,0.2) transparent;
 border-style: solid;
 border-width: 15px;
 position: absolute;
}