JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://github.com/jamespadolsey/jQuery-Plugins/raw/19fd7d3e472b2af494a878f93daba8a278f6f2b2/pulse/jquery.pulse.js"></script>
<div id="a"></div>

CSS

#a { width: 200px; height: 200px; background: red; float: left; }

JavaScript

jQuery('#a').pulse({
    opacity: [1, 0]
}, 300, 999, 'linear');