JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://tympanus.net/Tutorials/PortfolioImageNavigation/js/portfolio.js"></script>
<script src="http://tympanus.net/Tutorials/PortfolioImageNavigation/js/init.js"></script>
<div id="portfolio">
			<div id="background"></div>		
			<div class="arrows">
				<a href="#" class="up">Up</a>
				<a href="#" class="down">Down</a>
				<a href="#" class="prev">Previous</a>
				<a href="#" class="next">Next</a>
			</div>
			<div class="gallery">
				<div class="inside">
					<div class="item">
						<div><img src="http://tympanus.net/Tutorials/PortfolioImageNavigation/images/1.jpg" alt="image1" /></div>
						<div><img src="http://tympanus.net/Tutorials/PortfolioImageNavigation/images/2.jpg" alt="image2" /></div>
						<div><img src="http://tympanus.net/Tutorials/PortfolioImageNavigation/images/3.jpg" alt="image3" /></div>
					</div>
					<div class="item">
						<div><img src="http://tympanus.net/Tutorials/PortfolioImageNavigation/images/4.jpg" alt="image4" /></div>
						<div><img src="http://tympanus.net/Tutorials/PortfolioImageNavigation/images/5.jpg" alt="image5" /></div>
					</div>
					<div class="item">
						<div><img src="http://tympanus.net/Tutorials/PortfolioImageNavigation/images/6.jpg" alt="image6" /></div>
						<div><img src="http://tympanus.net/Tutorials/PortfolioImageNavigation/images/7.jpg" alt="image7" /></div>
						<div><img src="http://tympanus.net/Tutorials/PortfolioImageNavigation/images/8.jpg" alt="image8" /></div>
						<div><img src="http://tympanus.net/Tutorials/PortfolioImageNavigation/images/9.jpg" alt="image9" /></div>
						<div><img src="http://tympanus.net/Tutorials/PortfolioImageNavigation/images/10.jpg" alt="image10" /></div>
						<div><img src="http://tympanus.net/Tutorials/PortfolioImageNavigation/images/11.jpg" alt="image11" /></div>
					</div>
					<div class="item">
						<div><img src="http://tympanus.net/Tutorials/PortfolioImageNavigation/images/12.jpg" alt="image12" /></div>
						<div><img...

CSS

body {
	background:#191919;
	font-family:'PT Sans Narrow', Arial, Helvetica, sans-serif;
	font-size:12px;
	color:#333;
	line-height:18px;
}

#portfolio {
	position:fixed;
	top:50%;
	left:50%;
	z-index:1;
	width:1000px;
	height:500px;
	margin:-250px 0 0 -500px;
}

#background {
	position:fixed;
	top:0;
	left:0;
	width:100%;
	height:100%;
	z-index:2;
	background:url(http://tympanus.net/Tutorials/PortfolioImageNavigation/images/bg.png) no-repeat center;
}

#portfolio .gallery,
#portfolio .gallery .inside {
	position:absolute;
	top:0;
	left:0;
}

#portfolio .gallery {
	width:100%;
	height:100%;
	overflow:hidden;
}

#portfolio .gallery .inside {
	z-index:1;
}

#portfolio .arrows a {
	position:absolute;
	z-index:3;
	width:32px;
	height:32px;
	background-image:url(http://tympanus.net/Tutorials/PortfolioImageNavigation/images/arrows.png);
	background-repeat:no-repeat;
	outline:none;
	text-indent:-9999px;
}

#portfolio .arrows .prev,
#portfolio .arrows .up {
	display:none;
}

#portfolio .arrows .up,
#portfolio .arrows .down {
	left:50%;
	margin-left:-16px;
}

#portfolio .arrows .prev,
#portfolio .arrows .next {
	top:180px;
}

#portfolio .arrows .up {
	background-position:0 -64px;
	top:20px;
}

#portfolio .arrows .down {
	background-position:0 -96px;
	bottom:120px;
}

#portfolio .arrows .prev {
	background-position:0 -32px;
	left:60px;
}

#portfolio .arrows .next {
	background-position:0 0;
	right:60px;
}

#portfolio .arrows .up:hover {
	background-position:-32px -64px;
}

#portfolio .arrows .down:hover {
	background-position:-32px -96px;
}

#portfolio .arrows .next:hover {
	background-position:-32px 0;
}

#portfolio .arrows .prev:hover {
	background-position:-32px -32px;
}


#portfolio .item {
	position:absolute;
	top:0;
	width:1000px;
	height:400px;
}

#portfolio .item div {
	position:absolute;
	left:0;
	width:100%;
	height:100%;
}

#portfolio .item div img {
	position:absolute;
	top:0;
	left:50%;
	margin-left:-300px;
}

#portfolio .paths...