JSFiddle - React, Tailwind, and code Playground

HTML

<p>
          <i class="fa fa-spinner fa-spin"></i>
          <i class="fa fa-refresh fa-spin"></i>
          <i class="fa fa-cog fa-spin"></i>
      </p>
      <br>
      <p>
          <i class="fa fa-quote-left fa-2x pull-left fa-border"></i>
          Use a few styles together and you'll have easy pull quotes or a great introductory article icon.
      </p>
      <br>
      <h2>Stacked Icons</h2>
      <p>
          <span class="fa-stack fa-lg">
              <i class="fa fa-square-o fa-stack-2x"></i>
              <i class="fa fa-twitter fa-stack-1x"></i>
      </span>
      fa-twitter on fa-square-o<br>
      <span class="fa-stack fa-lg">
        <i class="fa fa-circle fa-stack-2x"></i>
        <i class="fa fa-flag fa-stack-1x fa-inverse"></i>
      </span>
      fa-flag on fa-circle<br>
      <span class="fa-stack fa-lg">
        <i class="fa fa-square fa-stack-2x"></i>
        <i class="fa fa-terminal fa-stack-1x fa-inverse"></i>
      </span>
      fa-terminal on fa-square<br>
      <span class="fa-stack fa-lg">
        <i class="fa fa-camera fa-stack-1x"></i>
        <i class="fa fa-ban fa-stack-2x text-danger"></i>
      </span>
      fa-ban on fa-camera
      </p>

CSS

@import "https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.4.0/css/font-awesome.css";