JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.2.0/css/all.css" integrity="sha384-hWVjflwFxL6sNzntih27bfxkr27PmbbK/iSvJ+a4+0owXq79v+lsFkW54bOGbiDQ" crossorigin="anonymous">
<div>
<i class="fas fa-ambulance"></i>
</div>

CSS

.fa-ambulance {
  color: red;
  background-color: #fff;
  font-size:100px;
}