JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://s.w.org/wp-includes/css/dashicons.css">
<a class="fullscreen" href="#">FULL SCREEN</a>

CSS

a:link {
    text-decoration: none;
}

.fullscreen:before {
	font-family: "dashicons";
    content: "\f211 ";
	font-size:20px;
}