JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.4.1/css/all.css">
<a href="#">This is a link</a>

CSS

body {
    font-family: Arial;
    font-size: 13px;
}

a {
    text-decoration: none;
    color: #515151;
}

a:before {
   font-family: "Font Awesome 5 Free";
   content: "\f095";
   display: inline-block;
   padding-right: 3px;
   vertical-align: middle;
   font-weight:900;
}