JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css">
<i class="fa fa-cog"></i> Edit profile

CSS

.fa-cog {
    color: black;
    background-color: #ff3344;
}