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HTML

About HTML Preprocessors

HTML preprocessors can make writing HTML more powerful or convenient. For instance, Markdown is designed to be easier to write and read for text documents and you could write a loop in Pug.

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Adding Classes

In CodePen, whatever you write in the HTML editor is what goes within the <body> tags in a basic HTML5 template. So you don't have access to higher-up elements like the <html> tag. If you want to add classes there that can affect the whole document, this is the place to do it.

About the <head>

In CodePen, whatever you write in the HTML editor is what goes within the <body> tags in a basic HTML5 template. If you need things in the <head> of the document, put that code here.

!
Insecure Resource

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CSS

About CSS Preprocessors

CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.

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CSS Base

About CSS Base

It's a common practice to apply CSS to a page that styles elements such that they are consistent across all browsers. We offer two of the most popular choices: normalize.css and a reset. Or, choose Neither and nothing will be applied.

Vendor Prefixing

About Vendor Prefixing

To get the best cross-browser support, it is a common practice to apply vendor prefixes to CSS properties and values that require them to work. For instance -webkit- or -moz-.

We offer two popular choices: Autoprefixer (which processes your CSS server-side) and -prefix-free (which applies prefixes via a script, client-side).

Add External Stylesheets/Pens

Any URLs added here will be added as <link>s in order, and before the CSS in the editor. You can use the CSS from another Pen by using its URL and the proper URL extension.

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You can apply CSS to your Pen from any stylesheet on the web. Just put a URL to it here and we'll apply it, in the order you have them, before the CSS in the Pen itself.

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+ add another resource

JavaScript

About JavaScript Preprocessors

JavaScript preprocessors can help make authoring JavaScript easier and more convenient.

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Babel includes JSX processing.

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You can also link to another Pen here, and we'll pull the JavaScript from that Pen and include it. If it's using a matching preprocessor, we'll combine the code before preprocessing, so you can use the linked Pen as a true dependency.

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+ add another resource

Packages

Add Packages

Search for and use JavaScript packages from npm here. By selecting a package, an import statement will be added to the top of the JavaScript editor for this package.

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Using packages here is powered by esm.sh, which makes packages from npm not only available on a CDN, but prepares them for native JavaScript ESM usage.

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HTML 

              
                <!-- Section -->
<div class="section section--transparent">
	<!-- Section inner -->
	<div class="section__inner">
		<p>Phasellus dapibus ligula tempor arcu sollicitudin, id aliquet ante dictum. Suspendisse in arcu a orci facilisis pretium. Ut pretium elit non mollis vehicula. Donec mauris libero, dapibus eget imperdiet quis, auctor vestibulum lorem. In posuere viverra luctus. Morbi sed sapien ipsum. Fusce hendrerit a arcu vel aliquet. Cras ac nibh lorem. Pellentesque vehicula tristique tellus facilisis condimentum.</p>
	</div>
	<!-- END Section inner -->
</div>
<!-- END Section -->

<!-- Section -->
<div class="section">
	<!-- Section inner -->
	<div class="section__inner">
		
		<!-- Carousel block -->
		<div id="js-carousel" class="carousel">
			<!-- Carousel items container -->
			<ul class="carousel__items">
				<!-- Carousel item -->
				<li class="carousel__item is-active">
					<article class="card">
						<div class="card__icon">
							<span class="icon icon--circle"></span>
						</div>
						<div class="card__details">
							<p><strong>Lorem ipsum</strong></p>
							<p><small>Dolor sit amet</small></p>
						</div>
					</article>
				</li>
				<!-- END Carousel item -->
				<!-- Carousel item -->
				<li class="carousel__item">
					<article class="card">
						<div class="card__icon">
							<span class="icon icon--circle"></span>
						</div>
						<div class="card__details">
							<p><strong>Lorem ipsum dolor sit</strong></p>
							<p><small>Nunc sed rhoncus ante</small></p>
						</div>
					</article>
				</li>
				<!-- END Carousel item -->
				<!-- Carousel item -->
				<li class="carousel__item is-active">
					<article class="card">
						<div class="card__icon">
							<span class="icon icon--circle"></span>
						</div>
						<div class="card__details">
							<p><strong>Lorem ipsum</strong></p>
							<p><small>Dolor sit amet</small></p>
						</div>
					</article>
				</li>
				<!-- END Carousel item -->
				<!-- Carousel item -->
				<li class="carousel__item">
					<article class="card">
						<div class="card__icon">
							<span class="icon icon--circle"></span>
						</div>
						<div class="card__details">
							<p><strong>Lorem ipsum dolor sit</strong></p>
							<p><small>Nunc sed rhoncus ante</small></p>
						</div>
					</article>
				</li>
				<!-- END Carousel item -->
				<!-- Carousel item -->
				<li class="carousel__item is-active">
					<article class="card">
						<div class="card__icon">
							<span class="icon icon--circle"></span>
						</div>
						<div class="card__details">
							<p><strong>Lorem ipsum</strong></p>
							<p><small>Dolor sit amet</small></p>
						</div>
					</article>
				</li>
				<!-- END Carousel item -->
				<!-- Carousel item -->
				<li class="carousel__item">
					<article class="card">
						<div class="card__icon">
							<span class="icon icon--circle"></span>
						</div>
						<div class="card__details">
							<p><strong>Lorem ipsum dolor sit</strong></p>
							<p><small>Nunc sed rhoncus ante</small></p>
						</div>
					</article>
				</li>
				<!-- END Carousel item -->
				<!-- Carousel item -->
				<li class="carousel__item is-active">
					<article class="card">
						<div class="card__icon">
							<span class="icon icon--circle"></span>
						</div>
						<div class="card__details">
							<p><strong>Lorem ipsum</strong></p>
							<p><small>Dolor sit amet</small></p>
						</div>
					</article>
				</li>
				<!-- END Carousel item -->
				<!-- Carousel item -->
				<li class="carousel__item">
					<article class="card">
						<div class="card__icon">
							<span class="icon icon--circle"></span>
						</div>
						<div class="card__details">
							<p><strong>Lorem ipsum dolor sit</strong></p>
							<p><small>Nunc sed rhoncus ante</small></p>
						</div>
					</article>
				</li>
				<!-- END Carousel item -->
				<!-- Carousel item -->
				<li class="carousel__item is-active">
					<article class="card">
						<div class="card__icon">
							<span class="icon icon--circle"></span>
						</div>
						<div class="card__details">
							<p><strong>Lorem ipsum</strong></p>
							<p><small>Dolor sit amet</small></p>
						</div>
					</article>
				</li>
				<!-- END Carousel item -->
				<!-- Carousel item -->
				<li class="carousel__item">
					<article class="card">
						<div class="card__icon">
							<span class="icon icon--circle"></span>
						</div>
						<div class="card__details">
							<p><strong>Lorem ipsum dolor sit</strong></p>
							<p><small>Nunc sed rhoncus ante</small></p>
						</div>
					</article>
				</li>
				<!-- END Carousel item -->
				<!-- Carousel item -->
				<li class="carousel__item">
					<article class="card">
						<div class="card__icon">
							<span class="icon icon--circle"></span>
						</div>
						<div class="card__details">
							<p><strong>Lorem ipsum</strong></p>
							<p><small>Dolor sit amet</small></p>
						</div>
					</article>
				</li>
				<!-- END Carousel item -->
				<!-- Carousel item -->
				<li class="carousel__item">
					<article class="card">
						<div class="card__icon">
							<span class="icon icon--circle"></span>
						</div>
						<div class="card__details">
							<p><strong>Lorem ipsum</strong></p>
							<p><small>Dolor sit amet</small></p>
						</div>
					</article>
				</li>
				<!-- END Carousel item -->
				<!-- Carousel item -->
				<li class="carousel__item">
					<article class="card">
						<div class="card__icon">
							<span class="icon icon--circle"></span>
						</div>
						<div class="card__details">
							<p><strong>Lorem ipsum</strong></p>
							<p><small>Dolor sit amet</small></p>
						</div>
					</article>
				</li>
				<!-- END Carousel item -->
			</ul>
			<!-- END Carousel items container -->
			<!-- Carousel nav items container -->
			<div class="carousel__nav">
				<!-- Carousel nav item -->
				<button class="carousel__nav-item" role="previous" disabled>
					<span class="icon icon--chevron-left">
						<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16"><path fill="currentColor" d="M8.053 8.355c.193-.195.193-.517 0-.711l-3.26-3.289c-.193-.195-.192-.514.002-.709l1.371-1.371c.194-.194.512-.193.706.001l5.335 5.369c.195.195.195.515 0 .708l-5.335 5.37c-.194.192-.512.193-.706.002l-1.371-1.371c-.194-.195-.195-.514-.002-.709l3.26-3.29z"/></svg>
					</span>
				</button>
				<!-- END Carousel nav item -->
				<!-- Carousel nav item -->
				<button class="carousel__nav-item" role="next">
					<span class="icon icon--chevron-right">
						<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16"><path fill="currentColor" d="M8.053 8.355c.193-.195.193-.517 0-.711l-3.26-3.289c-.193-.195-.192-.514.002-.709l1.371-1.371c.194-.194.512-.193.706.001l5.335 5.369c.195.195.195.515 0 .708l-5.335 5.37c-.194.192-.512.193-.706.002l-1.371-1.371c-.194-.195-.195-.514-.002-.709l3.26-3.29z"/></svg>
					</span>
				</button>
				<!-- END Carousel nav item -->
			</div>
			<!-- END Carousel nav items container -->
		</div>
		<!-- END Carousel block -->
		
	</div>
	<!-- END Section inner -->
</div>
<!-- END Section -->


<!-- Section -->
<div class="section section--transparent">
	<!-- Section inner -->
	<div class="section__inner">
		<p>Phasellus dapibus ligula tempor arcu sollicitudin, id aliquet ante dictum. Suspendisse in arcu a orci facilisis pretium. Ut pretium elit non mollis vehicula. Donec mauris libero, dapibus eget imperdiet quis, auctor vestibulum lorem. In posuere viverra luctus. Morbi sed sapien ipsum. Fusce hendrerit a arcu vel aliquet. Cras ac nibh lorem. Pellentesque vehicula tristique tellus facilisis condimentum.</p>
	</div>
	<!-- END Section inner -->
</div>
<!-- END Section -->
!

CSS 

              
                /*---------------------------------------*\
	Settings
\*---------------------------------------*/

$base-size: 8px;
$debug-outline: false;



/*---------------------------------------*\
	Global styles
\*---------------------------------------*/

html,
body {
	display: flex;
	flex-wrap: wrap;
	align-content: center;
	justify-content: center;
	width: 100%;
	height: 100%;
	margin: 0;
	font-family: Arial, sans-serif;
	line-height: 1.44;
	background-color: #eee;
	overflow-x: hidden;
}

*,
*::after,
*::before {
	box-sizing: border-box;
	-webkit-font-smoothing: antialiased;
}

strong {
	font-weight: 700;
}

small {
	font-size: 0.875em;
}



/*---------------------------------------*\
	Section
\*---------------------------------------*/

.section {
	width: 100%;
	padding-right: $base-size * 6;
	padding-left: $base-size * 6;
	background-color: #fff;
	
	+ .section {
		margin-top: $base-size * 6;
	}
}

.section--transparent {
	background-color: transparent;
}

.section__inner {
	max-width: 150 * $base-size;
	margin-right: auto;
	margin-left: auto;
}



/*---------------------------------------*\
	Carousel
\*---------------------------------------*/

.carousel {
	position: relative;
}

.carousel__items {
	position: relative;
	transition: transform 0.3s ease-in-out;
	
	&::after {
		content: "";
		clear: both;
		display: table;
	}
}

.carousel__item {
	position: relative;
	float: left;
	opacity: 0.25;
	cursor: pointer;
	user-select: none;
	transition: opacity 0.3s linear;
	
	&:focus {
		opacity: 0.5;
	}
	
	&:hover {
		opacity: 0.75;
	}
	
	&.is-active {
		opacity: 1;
		
		&::before {
			transform: scale(1);
		}
	}
	
	&::before {
		content: "";
		position: absolute;
		bottom: 0;
		left: 0;
		width: 100%;
		height: 2px;
		background-color: currentcolor;
		transform: scale(1, 0);
		transform-origin: bottom left;
		transition: transform 0.8s cubic-bezier(0, 1, 0, 1);
	}
	
	+ .carousel__item {
		position: absolute;
		top: 0;
		left: 0;
	}
}

.carousel__nav {
	position: absolute;
	top: 0;
	left: 50%;
	width: 100vw;
	height: 100%;
	margin-left: -50vw;
	pointer-events: none;
}

.carousel__nav-item {
	z-index: 1;
	position: absolute;
	top: 0;
	width: $base-size * 6;
	height: 100%;
	font: inherit;
	border: 0;
	pointer-events: initial;
	transition: transform 0.3s ease-in-out;
	
	// States
	&:hover,
	&:active {
		color: inherit;
	}
	
	// Pseudo-elements
	&::after,
	&::before {
		content: "";
		position: absolute;
	}
	
	&::after {
		z-index: -1;
		top: 0;
		left: 0;
		width: 100%;
		height: 100%;
		background-color: #fff;
	}
	
	&::before {
		z-index: -2;
		top: $base-size * 2;
		bottom: $base-size * 2;
		width: 1px;
		background-color: currentColor;
		box-shadow: 0 0 $base-size rgba(#000, 0.5);
		opacity: 1;
		transition: opacity 0.3s linear, transform 0.3s ease-in-out;
	}
	
	&[role="previous"] {
		left: 0;
		
		&::before {
			right: 0;
		}
	}
	
	&[role="next"] {
		right: 0;
		
		&::before {
			left: 0;
		}
	}
	
	&[disabled] {
		
		&::before {
			opacity: 0;
		}
		
		&[role="previous"] {
			transform: translate(-100%, 0);
			
			&::before {
				transform: translate($base-size * -1, 0);
			}
		}
		
		&[role="next"] {
			transform: translate(100%, 0);
			
			&::before {
				transform: translate($base-size, 0);
			}
		}
	}
	
	span {
		z-index: 1;
		position: relative;
	}
}



/*---------------------------------------*\
	Car
\*---------------------------------------*/

.card {
	padding: $base-size * 3;
	
	&::after {
		content: "";
		clear: both;
		display: table;
	}
}

.card__icon,
.card__details {
	float: left;
}

.card__details {
	margin-left: $base-size * 2;
}



/*---------------------------------------*\
	Icon
\*---------------------------------------*/

.icon {
	display: inline-block;
	vertical-align: middle;
}

.icon--circle {
	width: $base-size * 6;
	height: $base-size * 6;
	border: $base-size solid;
	border-radius: $base-size * 4;
}

.icon--chevron-left,
.icon--chevron-right {
	width: $base-size * 2;
	height: $base-size * 2;
}

.icon--chevron-left {
	transform: scale(-1);
}



/*---------------------------------------*\
	Debug helper

	Add a coloured outline to every
	elements in the document
\*---------------------------------------*/

@if $debug-outline == true {

	*:after,
	*:before {
		outline: 1px solid rgba(#f00, 0.5);
	}

	body        { outline: 1px solid rgba(#2980b9, 0.5) !important; }
	article     { outline: 1px solid rgba(#3498db, 0.5) !important; }
	nav         { outline: 1px solid rgba(#0088c3, 0.5) !important; }
	aside       { outline: 1px solid rgba(#33a0ce, 0.5) !important; }
	section     { outline: 1px solid rgba(#66b8da, 0.5) !important; }
	header      { outline: 1px solid rgba(#99cfe7, 0.5) !important; }
	footer      { outline: 1px solid rgba(#cce7f3, 0.5) !important; }
	h1          { outline: 1px solid rgba(#162544, 0.5) !important; }
	h2          { outline: 1px solid rgba(#314e6e, 0.5) !important; }
	h3          { outline: 1px solid rgba(#3e5e85, 0.5) !important; }
	h4          { outline: 1px solid rgba(#449baf, 0.5) !important; }
	h5          { outline: 1px solid rgba(#c7d1cb, 0.5) !important; }
	h6          { outline: 1px solid rgba(#4371d0, 0.5) !important; }
	main        { outline: 1px solid rgba(#2f4f90, 0.5) !important; }
	address     { outline: 1px solid rgba(#1a2c51, 0.5) !important; }
	div         { outline: 1px solid rgba(#036cdb, 0.5) !important; }
	p           { outline: 1px solid rgba(#ac050b, 0.5) !important; }
	hr          { outline: 1px solid rgba(#ff063f, 0.5) !important; }
	pre         { outline: 1px solid rgba(#850440, 0.5) !important; }
	blockquote  { outline: 1px solid rgba(#f1b8e7, 0.5) !important; }
	ol          { outline: 1px solid rgba(#ff050c, 0.5) !important; }
	ul          { outline: 1px solid rgba(#d90416, 0.5) !important; }
	li          { outline: 1px solid rgba(#d90416, 0.5) !important; }
	dl          { outline: 1px solid rgba(#fd3427, 0.5) !important; }
	dt          { outline: 1px solid rgba(#ff0043, 0.5) !important; }
	dd          { outline: 1px solid rgba(#e80174, 0.5) !important; }
	figure      { outline: 1px solid rgba(#f0b, 0.5) !important;    }
	figcaption  { outline: 1px solid rgba(#bf0032, 0.5) !important; }
	table       { outline: 1px solid rgba(#0c9, 0.5) !important;    }
	caption     { outline: 1px solid rgba(#37ffc4, 0.5) !important; }
	thead       { outline: 1px solid rgba(#98daca, 0.5) !important; }
	tbody       { outline: 1px solid rgba(#64a7a0, 0.5) !important; }
	tfoot       { outline: 1px solid rgba(#22746b, 0.5) !important; }
	tr          { outline: 1px solid rgba(#86c0b2, 0.5) !important; }
	th          { outline: 1px solid rgba(#a1e7d6, 0.5) !important; }
	td          { outline: 1px solid rgba(#3f5a54, 0.5) !important; }
	col         { outline: 1px solid rgba(#6c9a8f, 0.5) !important; }
	colgroup    { outline: 1px solid rgba(#6c9a9d, 0.5) !important; }
	button      { outline: 1px solid rgba(#da8301, 0.5) !important; }
	datalist    { outline: 1px solid rgba(#c06000, 0.5) !important; }
	fieldset    { outline: 1px solid rgba(#d95100, 0.5) !important; }
	form        { outline: 1px solid rgba(#d23600, 0.5) !important; }
	input       { outline: 1px solid rgba(#fca600, 0.5) !important; }
	keygen      { outline: 1px solid rgba(#b31e00, 0.5) !important; }
	label       { outline: 1px solid rgba(#ee8900, 0.5) !important; }
	legend      { outline: 1px solid rgba(#de6d00, 0.5) !important; }
	meter       { outline: 1px solid rgba(#e8630c, 0.5) !important; }
	optgroup    { outline: 1px solid rgba(#b33600, 0.5) !important; }
	option      { outline: 1px solid rgba(#ff8a00, 0.5) !important; }
	output      { outline: 1px solid rgba(#ff9619, 0.5) !important; }
	progress    { outline: 1px solid rgba(#e57c00, 0.5) !important; }
	select      { outline: 1px solid rgba(#e26e0f, 0.5) !important; }
	textarea    { outline: 1px solid rgba(#cc5400, 0.5) !important; }
	details     { outline: 1px solid rgba(#33848f, 0.5) !important; }
	summary     { outline: 1px solid rgba(#60a1a6, 0.5) !important; }
	command     { outline: 1px solid rgba(#438da1, 0.5) !important; }
	menu        { outline: 1px solid rgba(#449da6, 0.5) !important; }
	del         { outline: 1px solid rgba(#bf0000, 0.5) !important; }
	ins         { outline: 1px solid rgba(#400000, 0.5) !important; }
	img         { outline: 1px solid rgba(#22746b, 0.5) !important; }
	iframe      { outline: 1px solid rgba(#64a7a0, 0.5) !important; }
	embed       { outline: 1px solid rgba(#98daca, 0.5) !important; }
	object      { outline: 1px solid rgba(#0c9, 0.5) !important;    }
	param       { outline: 1px solid rgba(#37ffc4, 0.5) !important; }
	video       { outline: 1px solid rgba(#6ee866, 0.5) !important; }
	audio       { outline: 1px solid rgba(#027353, 0.5) !important; }
	source      { outline: 1px solid rgba(#012426, 0.5) !important; }
	canvas      { outline: 1px solid rgba(#a2f570, 0.5) !important; }
	track       { outline: 1px solid rgba(#59a600, 0.5) !important; }
	map         { outline: 1px solid rgba(#7be500, 0.5) !important; }
	area        { outline: 1px solid rgba(#305900, 0.5) !important; }
	a           { outline: 1px solid rgba(#ff62ab, 0.5) !important; }
	em          { outline: 1px solid rgba(#800b41, 0.5) !important; }
	strong      { outline: 1px solid rgba(#ff1583, 0.5) !important; }
	i           { outline: 1px solid rgba(#803156, 0.5) !important; }
	b           { outline: 1px solid rgba(#cc1169, 0.5) !important; }
	u           { outline: 1px solid rgba(#ff0430, 0.5) !important; }
	s           { outline: 1px solid rgba(#f805e3, 0.5) !important; }
	small       { outline: 1px solid rgba(#d107b2, 0.5) !important; }
	abbr        { outline: 1px solid rgba(#4a0263, 0.5) !important; }
	q           { outline: 1px solid rgba(#240018, 0.5) !important; }
	cite        { outline: 1px solid rgba(#64003c, 0.5) !important; }
	dfn         { outline: 1px solid rgba(#b4005a, 0.5) !important; }
	sub         { outline: 1px solid rgba(#dba0c8, 0.5) !important; }
	sup         { outline: 1px solid rgba(#cc0256, 0.5) !important; }
	time        { outline: 1px solid rgba(#d6606d, 0.5) !important; }
	code        { outline: 1px solid rgba(#e04251, 0.5) !important; }
	kbd         { outline: 1px solid rgba(#5e001f, 0.5) !important; }
	samp        { outline: 1px solid rgba(#9c0033, 0.5) !important; }
	var         { outline: 1px solid rgba(#d90047, 0.5) !important; }
	mark        { outline: 1px solid rgba(#ff0053, 0.5) !important; }
	bdi         { outline: 1px solid rgba(#bf3668, 0.5) !important; }
	bdo         { outline: 1px solid rgba(#6f1400, 0.5) !important; }
	ruby        { outline: 1px solid rgba(#ff7b93, 0.5) !important; }
	rt          { outline: 1px solid rgba(#ff2f54, 0.5) !important; }
	rp          { outline: 1px solid rgba(#803e49, 0.5) !important; }
	span        { outline: 1px solid rgba(#cc2643, 0.5) !important; }
	br          { outline: 1px solid rgba(#db687d, 0.5) !important; }
	wbr         { outline: 1px solid rgba(#db175b, 0.5) !important; }
}
!

JS 

              
                /** @type {Boolean} Whether to show log in the console or not */
var debug = true;

/** @type {Function} Log alias */
var log = debug
	? window.console.log.bind(window, 'Carousel:')
	: function() {};

/**
 * Carousel class
 */
class Carousel {

	/**
	 * Class constructor
	 *
	 * @return {Object} The created instance
	 */
	constructor() {
		log('constructor');

		// Get DOM elements
		this.itemsElement = document.querySelector('#js-carousel .carousel__items');
		this.itemElements = document.querySelectorAll('#js-carousel .carousel__item');
		this.navItemElements = document.querySelectorAll('#js-carousel .carousel__nav-item');

		// Carousel infromations
		this.length = this.itemElements.length;
		this.index = 0;
		this.x = 0;

		// Set up everything
		this.bindEvents()
			.setItemsPosition()
			.updatePosition(this.index)
			.updateItems(this.index)
			.updateNav(this.index);

		return this;
	}

	/**
	 * Bind navigation event on:
	 * - navigation elements
	 * - each item
	 *
	 * @return {Object} The current instance
	 */
	bindEvents() {
		log('bindEvents');

		const itemElementClickHandler = this.itemElementClickHandler.bind(this);
		this.itemElements.forEach((itemElement, index) => {
			itemElement.setAttribute('data-index', index);
			itemElement.addEventListener('click', itemElementClickHandler);
		});

		const navItemElementClickHandler = this.navItemElementClickHandler.bind(this);
		this.navItemElements.forEach((navItemElement) => {
			navItemElement.addEventListener('click', navItemElementClickHandler);
		});
		
		return this;
	}

	/**
	 * Handler for the `click` event on each item of the carousel
	 *
	 * @return {void}
	 */
	itemElementClickHandler(e) {
		log('itemElementClickHandler');
		const index = e.currentTarget.getAttribute('data-index');
		this.goto(parseInt(index, 10));
	}

	/**
	 * Handler for the `click` event on navigation buttons
	 *
	 * @return {void}
	 */
	navItemElementClickHandler(e) {
		log('navItemElementClickHandler');
		const direction = e.currentTarget.getAttribute('role');
		this[direction]();
	}

	/**
	 * Go to the previous item
	 *
	 * @return {Object} The current instance
	 */
	previous() {
		log('previous');
		this.goto(this.index - 1);
		return this;
	}

	/**
	 * Go to the next item
	 *
	 * @return {Object} The current instance
	 */
	next() {
		log('next');
		this.goto(this.index + 1);
		return this;
	}

	/**
	 * Go to the given index if it is not lower than
	 * the minimum index (0) nor greater than the total
	 * index (length - 1)
	 *
	 * @return {Object} The current instance
	 */
	goto(index) {
		log('goto', index);

		// Always update nav
		this.updateNav(index);

		// Check if the target index is not
		// too small or too big
		if (index < 0 || index > this.length - 1) {
			log('already at one end');
			return;
		}

		// Update everything to the current index
		this.updatePosition(index)
			.updateItems(index);
		this.index = index;

		return this;
	}

	/**
	 * Set all items position to display
	 * all of them on the same line
	 *
	 * @return {Object} The current instance
	 */
	setItemsPosition() {
		log('setItemsPosition');
		let x = 0;
		this.itemElements.forEach((itemElement, index) => {
			itemElement.style.transform = `translate3d(${x}px, 0, 0)`;
			x += itemElement.getBoundingClientRect().width;
		});

		return this;
	}

	/**
	 * Update the items container position to display
	 * the target index element in the first position
	 *
	 * @return {Object} The current instance
	 */
	updatePosition(index) {
		log('updatePosition');

		if (index === this.index) {
			log('index has not changed, do not update position');
			return this;
		}

		let itemsWidth = 0;
		this.itemElements.forEach((itemElement, i) => {
			if (i < index) {
				itemsWidth += itemElement.getBoundingClientRect().width;
			}
		});
		this.x = -itemsWidth;

		this.itemsElement.style.transform = `translate3d(${this.x}px, 0, 0)`;

		return this;
	}

	/**
	 * Update the target item's class
	 *
	 * @return {Object} The current instance
	 */
	updateItems(index) {
		log('updateItems');
		this.itemElements.forEach((itemElement) => {
			itemElement.classList.remove('is-active');
		});
		this.itemElements.item(index).classList.add('is-active');

		return this;
	}

	/**
	 * Update the nav buttons states given an index
	 *
	 * @return {Object} The current instance
	 */
	updateNav(index) {
		log('updateNav');

		const previous = this.navItemElements.item(0);
		const next = this.navItemElements.item(1);

		// Update previous button
		if (index <= 0) {
			previous.setAttribute('disabled', true);
		} else {
			previous.removeAttribute('disabled');
		}

		// Update next button
		if (index >= this.length - 1) {
			next.setAttribute('disabled', true);
		} else {
			next.removeAttribute('disabled');
		}

		return this;
	}
}

// Init a carousel
const carousel = new Carousel();
!
999px

Console