JSFiddle - React, Tailwind, and code Playground

HTML

<div class="clock" style="margin:2em;"></div>
	<div class="message"></div>

CSS

/* Get the bourbon mixin from http://bourbon.io */
/* Reset */
.flip-clock-wrapper * {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    -ms-box-sizing: border-box;
    -o-box-sizing: border-box;
    box-sizing: border-box;
    -webkit-backface-visibility: hidden;
    -moz-backface-visibility: hidden;
    -ms-backface-visibility: hidden;
    -o-backface-visibility: hidden;
    backface-visibility: hidden;
}

.flip-clock-wrapper a {
  cursor: pointer;
  text-decoration: none;
  color: #ccc; }

.flip-clock-wrapper a:hover {
  color: #fff; }

.flip-clock-wrapper ul {
  list-style: none; }

.flip-clock-wrapper.clearfix:before,
.flip-clock-wrapper.clearfix:after {
  content: " ";
  display: table; }

.flip-clock-wrapper.clearfix:after {
  clear: both; }

.flip-clock-wrapper.clearfix {
  *zoom: 1; }

/* Main */
.flip-clock-wrapper {
  font: normal 11px "Helvetica Neue", Helvetica, sans-serif;
  -webkit-user-select: none; }

.flip-clock-meridium {
  background: none !important;
  box-shadow: 0 0 0 !important;
  font-size: 36px !important; }

.flip-clock-meridium a { color: #313333; }

.flip-clock-wrapper {
  text-align: center;
  position: relative;
  width: 100%;
  margin: 1em;
}

.flip-clock-wrapper:before,
.flip-clock-wrapper:after {
    content: " "; /* 1 */
    display: table; /* 2 */
}
.flip-clock-wrapper:after {
    clear: both;
}

/* Skeleton */
.flip-clock-wrapper ul {
  position: relative;
  float: left;
  margin: 5px;
  width: 60px;
  height: 90px;
  font-size: 80px;
  font-weight: bold;
  line-height: 87px;
  border-radius: 6px;
  background: #000;
}

.flip-clock-wrapper ul li {
  z-index: 1;
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  line-height: 87px;
  text-decoration: none !important;
}

.flip-clock-wrapper ul li:first-child {
  z-index: 2; }

.flip-clock-wrapper ul li a {
  display: block;
  height: 100%;
  -webkit-perspective: 200px;
  -moz-perspective: 200px;
  perspective: 200px;
  margin: 0...

JavaScript

/*
	Base.js, version 1.1a
	Copyright 2006-2010, Dean Edwards
	License: http://www.opensource.org/licenses/mit-license.php
*/

var Base = function() {
	// dummy
};

Base.extend = function(_instance, _static) { // subclass
	
	"use strict";
	
	var extend = Base.prototype.extend;
	
	// build the prototype
	Base._prototyping = true;
	
	var proto = new this();
	
	extend.call(proto, _instance);
	
	proto.base = function() {
	// call this method from any other method to invoke that method's ancestor
	};

	delete Base._prototyping;
	
	// create the wrapper for the constructor function
	//var constructor = proto.constructor.valueOf(); //-dean
	var constructor = proto.constructor;
	var klass = proto.constructor = function() {
		if (!Base._prototyping) {
			if (this._constructing || this.constructor == klass) { // instantiation
				this._constructing = true;
				constructor.apply(this, arguments);
				delete this._constructing;
			} else if (arguments[0] !== null) { // casting
				return (arguments[0].extend || extend).call(arguments[0], proto);
			}
		}
	};
	
	// build the class interface
	klass.ancestor = this;
	klass.extend = this.extend;
	klass.forEach = this.forEach;
	klass.implement = this.implement;
	klass.prototype = proto;
	klass.toString = this.toString;
	klass.valueOf = function(type) {
		//return (type == "object") ? klass : constructor; //-dean
		return (type == "object") ? klass : constructor.valueOf();
	};
	extend.call(klass, _static);
	// class initialisation
	if (typeof klass.init == "function") klass.init();
	return klass;
};

Base.prototype = {	
	extend: function(source, value) {
		if (arguments.length > 1) { // extending with a name/value pair
			var ancestor = this[source];
			if (ancestor && (typeof value == "function") && // overriding a method?
				// the valueOf() comparison is to avoid circular references
				(!ancestor.valueOf || ancestor.valueOf() != value.valueOf()) &&
				/\bbase\b/.test(value)) {
				// get the underlying method
				var method =...