JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<script src="http://giis.co.in/jsfiles/jquery.plugin.js"></script>
<script src="http://giis.co.in/jsfiles/jquery.countdown.js"></script>
<div id="timer"> </div>

CSS

/* jQuery Countdown styles 2.0.0. */
.is-countdown {
	border: 1px solid #ccc;
	background-color: #eee;
}
.countdown-rtl {
	direction: rtl;
}
.countdown-holding span {
	color: #888;
}
.countdown-row {
	clear: both;
	width: 100%;
	padding: 0px 2px;
	text-align: center;
}
.countdown-show1 .countdown-section {
	width: 98%;
}
.countdown-show2 .countdown-section {
	width: 48%;
}
.countdown-show3 .countdown-section {
	width: 32.5%;
}
.countdown-show4 .countdown-section {
	width: 24.5%;
}
.countdown-show5 .countdown-section {
	width: 19.5%;
}
.countdown-show6 .countdown-section {
	width: 16.25%;
}
.countdown-show7 .countdown-section {
	width: 14%;
}
.countdown-section {
	display: block;
	float: left;
	font-size: 75%;
	text-align: center;
}
.countdown-amount {
    font-size: 200%;
}
.countdown-period {
    display: block;
}
.countdown-descr {
	display: block;
	width: 100%;
}

JavaScript

// Fires once
$(document).ready(function(){
  $('#timer').countdown({until: +300, format: 'dHMS'});
});