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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

The resource you are linking to is using the 'http' protocol, which may not work when the browser is using https.

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

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About External Resources

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.

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

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JavaScript

About JavaScript Preprocessors

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

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Babel includes JSX processing.

Add External Scripts/Pens

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

If the script you link to has the file extension of a preprocessor, we'll attempt to process it before applying.

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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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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About Packages

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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Visit your global Editor Settings.

HTML 

              
                <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css">

<div class="iframe">
<header class="headerWrapper">
<a href="#" class="menuBtn">
<span class="menuLines"></span>
</a>
</header>

<div class="mainContainer">
<ul class="mainMenu">
<li><a href="#" data-page="1" class="active"><i class="fa fa-newspaper-o"></i><span>News</span></a></li>
<li><a href="#" data-page="2"><i class="fa fa-anchor"></i><span>Services</span></a></li>
<li><a href="#" data-page="3"><i class="fa fa-home"></i><span>Krds</span></a></li>
<li><a href="#" data-page="4"><i class="fa fa-users"></i><span>Clients</span></a></li>
<li><a href="#" data-page="5"><i class="fa fa-male"></i><span>Jobs</span></a></li>
<li><a href="#" data-page="6"><i class="fa fa-file-video-o"></i><span>Press</span></a></li>
<li><a href="#" data-page="7"><i class="fa fa-link"></i><span>Contact</span></a></li>
<li><a href="#" data-page="8"><i class="fa fa-user"></i><span>Help</span></a></li>
</ul>

<div class="container">
<section class="page page-1 active">
<h2> <span>News</span> </h2>
<p>Pellentesque id arcu finibus, scelerisque quam non, sagittis diam. Sed congue blandit ex volutpat accumsan. Duis vitae dictum ex. Morbi quis purus quam. In tincidunt lacinia ornare.</p>
<p> Duis vel vestibulum mi. Donec maximus ex in semper pretium. Quisque vel nisi vel odio lacinia volutpat. Morbi blandit auctor nunc. Maecenas massa eros, ultricies at justo vel, laoreet mollis metus. Suspendisse vel nibh scelerisque mi consectetur rhoncus.</p>
<p>Etiam condimentum neque dignissim augue venenatis, vitae tempor dui efficitur. Quisque in efficitur dolor, ac molestie magna. Maecenas nibh metus, iaculis id ornare vitae, posuere id nisl. Sed et venenatis nibh.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur hendrerit facilisis felis lacinia posuere. Sed tristique lacinia condimentum. Curabitur in sem sollicitudin, mollis magna vitae, congue sapien. Proin id consectetur enim, ac volutpat lorem. Nunc euismod ante ac rhoncus venenatis. Morbi ut ipsum quis ligula malesuada maximus. Etiam ornare, diam sagittis scelerisque consectetur, nisl ipsum posuere justo, quis egestas lectus dolor et turpis. Duis vulputate metus enim, sed tempus diam sodales quis. Nunc convallis enim tortor, fringilla imperdiet quam vehicula id.</p>
<p>Nulla ut eros vulputate, egestas sapien id, mattis lorem. Etiam mollis erat sed lorem bibendum, sed bibendum eros finibus. Nullam rutrum dui ac est suscipit, vel efficitur elit faucibus. In rhoncus luctus enim in pharetra. Ut sed mauris fringilla erat placerat sollicitudin ut in ligula. Etiam ornare mi sit amet risus bibendum luctus. Phasellus sit amet nisi dictum, ultrices nisi eget, consequat lacus. Morbi tristique pellentesque mattis. Nam a tempor augue. Fusce auctor sapien vel dolor tempus, vitae porttitor justo blandit.</p>
</section>
<section class="page page-2">
<h2> <span>Services</span> </h2>
<p>Pellentesque id arcu finibus, scelerisque quam non, sagittis diam. Sed congue blandit ex volutpat accumsan. Duis vitae dictum ex. Morbi quis purus quam. In tincidunt lacinia ornare.</p>
<p> Duis vel vestibulum mi. Donec maximus ex in semper pretium. Quisque vel nisi vel odio lacinia volutpat. Morbi blandit auctor nunc. Maecenas massa eros, ultricies at justo vel, laoreet mollis metus. Suspendisse vel nibh scelerisque mi consectetur rhoncus.</p>
<p>Etiam condimentum neque dignissim augue venenatis, vitae tempor dui efficitur. Quisque in efficitur dolor, ac molestie magna. Maecenas nibh metus, iaculis id ornare vitae, posuere id nisl. Sed et venenatis nibh.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur hendrerit facilisis felis lacinia posuere. Sed tristique lacinia condimentum. Curabitur in sem sollicitudin, mollis magna vitae, congue sapien. Proin id consectetur enim, ac volutpat lorem. Nunc euismod ante ac rhoncus venenatis. Morbi ut ipsum quis ligula malesuada maximus. Etiam ornare, diam sagittis scelerisque consectetur, nisl ipsum posuere justo, quis egestas lectus dolor et turpis. Duis vulputate metus enim, sed tempus diam sodales quis. Nunc convallis enim tortor, fringilla imperdiet quam vehicula id.</p>
<p>Nulla ut eros vulputate, egestas sapien id, mattis lorem. Etiam mollis erat sed lorem bibendum, sed bibendum eros finibus. Nullam rutrum dui ac est suscipit, vel efficitur elit faucibus. In rhoncus luctus enim in pharetra. Ut sed mauris fringilla erat placerat sollicitudin ut in ligula. Etiam ornare mi sit amet risus bibendum luctus. Phasellus sit amet nisi dictum, ultrices nisi eget, consequat lacus. Morbi tristique pellentesque mattis. Nam a tempor augue. Fusce auctor sapien vel dolor tempus, vitae porttitor justo blandit.</p>
</section>
<section class="page page-3">
<h2> <span>Krds</span> </h2>
<p>Pellentesque id arcu finibus, scelerisque quam non, sagittis diam. Sed congue blandit ex volutpat accumsan. Duis vitae dictum ex. Morbi quis purus quam. In tincidunt lacinia ornare.</p>
<p> Duis vel vestibulum mi. Donec maximus ex in semper pretium. Quisque vel nisi vel odio lacinia volutpat. Morbi blandit auctor nunc. Maecenas massa eros, ultricies at justo vel, laoreet mollis metus. Suspendisse vel nibh scelerisque mi consectetur rhoncus.</p>
<p>Etiam condimentum neque dignissim augue venenatis, vitae tempor dui efficitur. Quisque in efficitur dolor, ac molestie magna. Maecenas nibh metus, iaculis id ornare vitae, posuere id nisl. Sed et venenatis nibh.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur hendrerit facilisis felis lacinia posuere. Sed tristique lacinia condimentum. Curabitur in sem sollicitudin, mollis magna vitae, congue sapien. Proin id consectetur enim, ac volutpat lorem. Nunc euismod ante ac rhoncus venenatis. Morbi ut ipsum quis ligula malesuada maximus. Etiam ornare, diam sagittis scelerisque consectetur, nisl ipsum posuere justo, quis egestas lectus dolor et turpis. Duis vulputate metus enim, sed tempus diam sodales quis. Nunc convallis enim tortor, fringilla imperdiet quam vehicula id.</p>
<p>Nulla ut eros vulputate, egestas sapien id, mattis lorem. Etiam mollis erat sed lorem bibendum, sed bibendum eros finibus. Nullam rutrum dui ac est suscipit, vel efficitur elit faucibus. In rhoncus luctus enim in pharetra. Ut sed mauris fringilla erat placerat sollicitudin ut in ligula. Etiam ornare mi sit amet risus bibendum luctus. Phasellus sit amet nisi dictum, ultrices nisi eget, consequat lacus. Morbi tristique pellentesque mattis. Nam a tempor augue. Fusce auctor sapien vel dolor tempus, vitae porttitor justo blandit.</p>
</section>
<section class="page page-4">
<h2> <span>Clients</span> </h2>
<p>Pellentesque id arcu finibus, scelerisque quam non, sagittis diam. Sed congue blandit ex volutpat accumsan. Duis vitae dictum ex. Morbi quis purus quam. In tincidunt lacinia ornare.</p>
<p> Duis vel vestibulum mi. Donec maximus ex in semper pretium. Quisque vel nisi vel odio lacinia volutpat. Morbi blandit auctor nunc. Maecenas massa eros, ultricies at justo vel, laoreet mollis metus. Suspendisse vel nibh scelerisque mi consectetur rhoncus.</p>
<p>Etiam condimentum neque dignissim augue venenatis, vitae tempor dui efficitur. Quisque in efficitur dolor, ac molestie magna. Maecenas nibh metus, iaculis id ornare vitae, posuere id nisl. Sed et venenatis nibh.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur hendrerit facilisis felis lacinia posuere. Sed tristique lacinia condimentum. Curabitur in sem sollicitudin, mollis magna vitae, congue sapien. Proin id consectetur enim, ac volutpat lorem. Nunc euismod ante ac rhoncus venenatis. Morbi ut ipsum quis ligula malesuada maximus. Etiam ornare, diam sagittis scelerisque consectetur, nisl ipsum posuere justo, quis egestas lectus dolor et turpis. Duis vulputate metus enim, sed tempus diam sodales quis. Nunc convallis enim tortor, fringilla imperdiet quam vehicula id.</p>
<p>Nulla ut eros vulputate, egestas sapien id, mattis lorem. Etiam mollis erat sed lorem bibendum, sed bibendum eros finibus. Nullam rutrum dui ac est suscipit, vel efficitur elit faucibus. In rhoncus luctus enim in pharetra. Ut sed mauris fringilla erat placerat sollicitudin ut in ligula. Etiam ornare mi sit amet risus bibendum luctus. Phasellus sit amet nisi dictum, ultrices nisi eget, consequat lacus. Morbi tristique pellentesque mattis. Nam a tempor augue. Fusce auctor sapien vel dolor tempus, vitae porttitor justo blandit.</p>
</section>
<section class="page page-5">
<h2> <span>Jobs</span> </h2>
<p>Pellentesque id arcu finibus, scelerisque quam non, sagittis diam. Sed congue blandit ex volutpat accumsan. Duis vitae dictum ex. Morbi quis purus quam. In tincidunt lacinia ornare.</p>
<p> Duis vel vestibulum mi. Donec maximus ex in semper pretium. Quisque vel nisi vel odio lacinia volutpat. Morbi blandit auctor nunc. Maecenas massa eros, ultricies at justo vel, laoreet mollis metus. Suspendisse vel nibh scelerisque mi consectetur rhoncus.</p>
<p>Etiam condimentum neque dignissim augue venenatis, vitae tempor dui efficitur. Quisque in efficitur dolor, ac molestie magna. Maecenas nibh metus, iaculis id ornare vitae, posuere id nisl. Sed et venenatis nibh.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur hendrerit facilisis felis lacinia posuere. Sed tristique lacinia condimentum. Curabitur in sem sollicitudin, mollis magna vitae, congue sapien. Proin id consectetur enim, ac volutpat lorem. Nunc euismod ante ac rhoncus venenatis. Morbi ut ipsum quis ligula malesuada maximus. Etiam ornare, diam sagittis scelerisque consectetur, nisl ipsum posuere justo, quis egestas lectus dolor et turpis. Duis vulputate metus enim, sed tempus diam sodales quis. Nunc convallis enim tortor, fringilla imperdiet quam vehicula id.</p>
<p>Nulla ut eros vulputate, egestas sapien id, mattis lorem. Etiam mollis erat sed lorem bibendum, sed bibendum eros finibus. Nullam rutrum dui ac est suscipit, vel efficitur elit faucibus. In rhoncus luctus enim in pharetra. Ut sed mauris fringilla erat placerat sollicitudin ut in ligula. Etiam ornare mi sit amet risus bibendum luctus. Phasellus sit amet nisi dictum, ultrices nisi eget, consequat lacus. Morbi tristique pellentesque mattis. Nam a tempor augue. Fusce auctor sapien vel dolor tempus, vitae porttitor justo blandit.</p>
</section>
<section class="page page-6">
<h2> <span>Press</span> </h2>
<p>Pellentesque id arcu finibus, scelerisque quam non, sagittis diam. Sed congue blandit ex volutpat accumsan. Duis vitae dictum ex. Morbi quis purus quam. In tincidunt lacinia ornare.</p>
<p> Duis vel vestibulum mi. Donec maximus ex in semper pretium. Quisque vel nisi vel odio lacinia volutpat. Morbi blandit auctor nunc. Maecenas massa eros, ultricies at justo vel, laoreet mollis metus. Suspendisse vel nibh scelerisque mi consectetur rhoncus.</p>
<p>Etiam condimentum neque dignissim augue venenatis, vitae tempor dui efficitur. Quisque in efficitur dolor, ac molestie magna. Maecenas nibh metus, iaculis id ornare vitae, posuere id nisl. Sed et venenatis nibh.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur hendrerit facilisis felis lacinia posuere. Sed tristique lacinia condimentum. Curabitur in sem sollicitudin, mollis magna vitae, congue sapien. Proin id consectetur enim, ac volutpat lorem. Nunc euismod ante ac rhoncus venenatis. Morbi ut ipsum quis ligula malesuada maximus. Etiam ornare, diam sagittis scelerisque consectetur, nisl ipsum posuere justo, quis egestas lectus dolor et turpis. Duis vulputate metus enim, sed tempus diam sodales quis. Nunc convallis enim tortor, fringilla imperdiet quam vehicula id.</p>
<p>Nulla ut eros vulputate, egestas sapien id, mattis lorem. Etiam mollis erat sed lorem bibendum, sed bibendum eros finibus. Nullam rutrum dui ac est suscipit, vel efficitur elit faucibus. In rhoncus luctus enim in pharetra. Ut sed mauris fringilla erat placerat sollicitudin ut in ligula. Etiam ornare mi sit amet risus bibendum luctus. Phasellus sit amet nisi dictum, ultrices nisi eget, consequat lacus. Morbi tristique pellentesque mattis. Nam a tempor augue. Fusce auctor sapien vel dolor tempus, vitae porttitor justo blandit.</p>
</section>
<section class="page page-7">
<h2> <span>Contact</span> </h2>
<p>Pellentesque id arcu finibus, scelerisque quam non, sagittis diam. Sed congue blandit ex volutpat accumsan. Duis vitae dictum ex. Morbi quis purus quam. In tincidunt lacinia ornare.</p>
<p> Duis vel vestibulum mi. Donec maximus ex in semper pretium. Quisque vel nisi vel odio lacinia volutpat. Morbi blandit auctor nunc. Maecenas massa eros, ultricies at justo vel, laoreet mollis metus. Suspendisse vel nibh scelerisque mi consectetur rhoncus.</p>
<p>Etiam condimentum neque dignissim augue venenatis, vitae tempor dui efficitur. Quisque in efficitur dolor, ac molestie magna. Maecenas nibh metus, iaculis id ornare vitae, posuere id nisl. Sed et venenatis nibh.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur hendrerit facilisis felis lacinia posuere. Sed tristique lacinia condimentum. Curabitur in sem sollicitudin, mollis magna vitae, congue sapien. Proin id consectetur enim, ac volutpat lorem. Nunc euismod ante ac rhoncus venenatis. Morbi ut ipsum quis ligula malesuada maximus. Etiam ornare, diam sagittis scelerisque consectetur, nisl ipsum posuere justo, quis egestas lectus dolor et turpis. Duis vulputate metus enim, sed tempus diam sodales quis. Nunc convallis enim tortor, fringilla imperdiet quam vehicula id.</p>
<p>Nulla ut eros vulputate, egestas sapien id, mattis lorem. Etiam mollis erat sed lorem bibendum, sed bibendum eros finibus. Nullam rutrum dui ac est suscipit, vel efficitur elit faucibus. In rhoncus luctus enim in pharetra. Ut sed mauris fringilla erat placerat sollicitudin ut in ligula. Etiam ornare mi sit amet risus bibendum luctus. Phasellus sit amet nisi dictum, ultrices nisi eget, consequat lacus. Morbi tristique pellentesque mattis. Nam a tempor augue. Fusce auctor sapien vel dolor tempus, vitae porttitor justo blandit.</p>
</section>
<section class="page page-8">
<h2> <span>Help</span> </h2>
<p>Pellentesque id arcu finibus, scelerisque quam non, sagittis diam. Sed congue blandit ex volutpat accumsan. Duis vitae dictum ex. Morbi quis purus quam. In tincidunt lacinia ornare.</p>
<p> Duis vel vestibulum mi. Donec maximus ex in semper pretium. Quisque vel nisi vel odio lacinia volutpat. Morbi blandit auctor nunc. Maecenas massa eros, ultricies at justo vel, laoreet mollis metus. Suspendisse vel nibh scelerisque mi consectetur rhoncus.</p>
<p>Etiam condimentum neque dignissim augue venenatis, vitae tempor dui efficitur. Quisque in efficitur dolor, ac molestie magna. Maecenas nibh metus, iaculis id ornare vitae, posuere id nisl. Sed et venenatis nibh.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur hendrerit facilisis felis lacinia posuere. Sed tristique lacinia condimentum. Curabitur in sem sollicitudin, mollis magna vitae, congue sapien. Proin id consectetur enim, ac volutpat lorem. Nunc euismod ante ac rhoncus venenatis. Morbi ut ipsum quis ligula malesuada maximus. Etiam ornare, diam sagittis scelerisque consectetur, nisl ipsum posuere justo, quis egestas lectus dolor et turpis. Duis vulputate metus enim, sed tempus diam sodales quis. Nunc convallis enim tortor, fringilla imperdiet quam vehicula id.</p>
<p>Nulla ut eros vulputate, egestas sapien id, mattis lorem. Etiam mollis erat sed lorem bibendum, sed bibendum eros finibus. Nullam rutrum dui ac est suscipit, vel efficitur elit faucibus. In rhoncus luctus enim in pharetra. Ut sed mauris fringilla erat placerat sollicitudin ut in ligula. Etiam ornare mi sit amet risus bibendum luctus. Phasellus sit amet nisi dictum, ultrices nisi eget, consequat lacus. Morbi tristique pellentesque mattis. Nam a tempor augue. Fusce auctor sapien vel dolor tempus, vitae porttitor justo blandit.</p>
</section>
</div>
</div>
</div>
!

CSS 

              
                
@menubg-color: #ffd200;
@text-color: #4e4e4e;
@white: #fff;
@black: #000;

* {
	margin: 0;
	padding: 0;
}
*, *:after, *:before {
	box-sizing: border-box;
}
ol, ul {
	list-style: none;
}
html {
	line-height: 1.2;
	-webkit-font-smoothing: antialiased;
}
html, body {
	height: 100%;
}
body {
	background: @white;
	color: @text-color;
	font-family: "proxnova-reg", arial, sans-serif;
	font-size: 16px; 
 overflow: hidden;
}
.iframe {
 border-radius: 15px;
 border: 15px solid #000;
 box-shadow: 0 0 5px rgba(0,0,0,.5);
 margin: 30px auto;
 height: 600px;
 width: 360px;
 position: relative;
 overflow-x: hidden;

	perspective: 1200px;
}
.mainContainer {
	position: relative;
    height: 100%;

    transform-style: preserve-3d;
    transform: translateZ(-100px);

	> .mainMenu, .container {
		backface-visibility: hidden;
		min-height: 100%;
		position: absolute;
		left: 0;
		top: 0;
		z-index: 0;
		width: 100%;
	}
}
/* header */
header {
	height: 75px;
	position: absolute;
	left: 0;
	top: 0;
	width: 100%;
}
/* menu */
.menuBtn {
	border: 24px solid @black;
	border-radius: 5px;
	height: 0;
	width: 0;
	transition: all 300ms;
	transform: rotate(45deg);
	position: absolute;
	right: 15px;
	top: 15px;
	z-index: 1;
	.menuLines {
		background-color: @white;
		display: block;
		margin: -1px 0 0 -15px;
		position: absolute;
		top: 50%;
		transform: rotate(-45deg);
		height: 2px;
		width: 30px;
		&:after, &:before {
			content: '';
			background-color: @white;
			display: block;
			position: absolute;
			height: 2px;
			width: 100%;
			transition: all 200ms;
		}
		&:after {
			bottom: -7px;
		}
		&:before {
			top: -7px;
		}
	}
	&.clicked {
		border-color: @white;
		border-radius: 10px;
		transform: rotate(0deg);
		.menuLines {
			height: 0;
			transform: rotate(-0deg);
			&:after, &:before {
				background-color: #f67280;
				top: 1px;
			}
			&:after {
				transform: rotate(45deg);
			}
			&:before {
				transform: rotate(-45deg);
			}
		}
	}
}
.mainMenu {
	background-color: @menubg-color;
	transform: rotateY(-90deg) translateZ(288px);
	transition: transform 500ms;
	padding: 80px 0 0;
    &.flip {
		transform: rotateY(0deg) translateZ(100px);
		li {
			animation: shake 300ms linear;
			transform-origin: 50% 50%;
			animation-iteration-count: 2;
			&:nth-child(1) {
				opacity: 1;
				animation-delay: 100ms;
			}
			&:nth-child(2) {
				opacity: 1;
				animation-delay: 200ms;
			}
			&:nth-child(3) {
				opacity: 1;
				animation-delay: 300ms;
			}
			&:nth-child(4) {
				opacity: 1;
				animation-delay: 400ms;
			}
			&:nth-child(5) {
				opacity: 1;
				animation-delay: 500ms;
			}
			&:nth-child(6) {
				opacity: 1;
				animation-delay: 600ms;
			}
			&:nth-child(7) {
				opacity: 1;
				animation-delay: 700ms;
			}
			&:nth-child(8) {
				opacity: 1;
				animation-delay: 800ms;
			}
		}
    }
    li {
    	opacity: 0;
    	text-decoration: none;
    	&:nth-child(1) {
    		background-color: #16a085;
    	}
    	&:nth-child(2) {
    		background-color: #29b865;
    	}
    	&:nth-child(3) {
    		background-color: #2980b9;
    	}
    	&:nth-child(4) {
    		background-color: #8e44ad;
    	}
    	&:nth-child(5) {
    		background-color: #2c3e50;
    	}
    	&:nth-child(6) {
    		background-color: #f39c12;
    	}
    	&:nth-child(7) {
    		background-color: #d35400;
    	}
    	&:nth-child(8) {
    		background-color: #c0392b;
    	}
    	a {
    		color: @white;
    		display: block;
    		padding: 25px 0 25px 25px;
    		text-align: left;
    		text-transform: uppercase;
    		i, span {
    			display: inline-block;
    			vertical-align: middle;
    		}
    		i {
    			font-size: 25px;
    			margin-right: 10px;
    			text-align: center;
    			width: 30px;
    		}
    		span {
    			font-weight: bold;
    			letter-spacing: 1px;
    		}
    	}
    }
}

/* container */
.container {
 transform: translateZ( 100px );
	transition: transform 500ms;
	padding: 80px 0 10px;
    &.flip {
		transform: rotateY(90deg) translateZ(288px);
    }
	.page {
		margin: 0 10px;
		display: none;
		&.active {
			display: block;
		}
	}
	h2 {
		font-size: 20px;
		span {
			display: inline-block;
			vertical-align: middle;
		}
		&:before, &:after {
			content:'---';
			display: inline-block;
			vertical-align: middle;
		}
		&:before {
			margin-right: 5px;
		}
		&:after {
			margin-left: 5px;
		}
	}
	p {
		font-size: 15px;
		margin: 5px 0 0;
	}
}
/* animation */
.fade {
  animation: fade 3000ms;
}
@-webkit-keyframes fade {
	from {
		opacity: 0;
	}
	to {
		opacity: 1;
	}
}
@-moz-keyframes fade {
	from {
		opacity: 0;
	}
	to {
		opacity: 1;
	}
}
@keyframes fade {
	from {
		opacity: 0;
	}
	to {
		opacity: 1;
	}
}

@-webkit-keyframes shake {
	0% {
		-webkit-transform: scale(1);
		transform: scale(1);
	}
	50% {
		-webkit-transform: scale(0.9);
		transform: scale(0.9);
	}
	100% {
		-webkit-transform: scale(1);
		transform: scale(1);
	}
}
@keyframes shake {
	0% {
		-webkit-transform: scale(1);
		transform: scale(1);
	}
	50% {
		-webkit-transform: scale(0.9);
		transform: scale(0.9);
	}
	100% {
		-webkit-transform: scale(1);
		transform: scale(1);
	}
}
!

JS 

              
                $(document).ready(function(){

			$('.menuBtn').click(function() {
				if($('.menuBtn').hasClass('clicked')) {
					$(this).removeClass('clicked');
					$('.mainMenu').removeClass('flip');
					$('.container').removeClass('flip');
				}
				else {
					$(this).addClass('clicked');
					$('.mainMenu').addClass('flip');
					$('.container').addClass('flip');
				}
			});

			$(".mainMenu a").click(function(e) {
				e.preventDefault();
				
				_this	=	$(this);
				_page	=	_this.data('page');

				$('.menuBtn').removeClass('clicked');
				$('.mainMenu').removeClass('flip');
				$('.container').removeClass('flip');

			    $('.mainMenu a').removeClass('active');
			    _this.addClass('active');

			    $(".page").removeClass("active fade");
			    $(".page-" + _page).addClass("active fade");

			    setTimeout(function() {
					$("html, body").animate({ scrollTop: 0 }, "slow");
			    }, 500);
			    

			});
		});
!
999px

Console