JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://keith-wood.name/js/jquery.countdown.js"></script>
<div id="defaultCountdown"></div>
<div id="defaultCountdown2"></div>

CSS

.countdown_section { border: 1px solid blue; padding: 5px; display: inline-block; }
.hasCountdown { border: 1px solid red; margin: 5px; }

JavaScript

$('#defaultCountdown').countdown({until: new Date(2019, 1, 1)});
$('#defaultCountdown2').countdown({until: new Date(2020, 7, 1)});