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Adding Classes

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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.

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CSS

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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

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JavaScript

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Babel includes JSX processing.

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HTML 

              
                <div id="wrap">
<header>
	<div class="inner clearfix">
		<h1>SITE LOGO</h1>
		<p class="navBtn">
			<span></span>
			<span></span>
			<span></span>
		</p>
		<nav role='navigation'>
			<ul class="clearfix">
				<li><a href="#">Home</a></li>
				<li><a href="#">About</a></li>
				<li><a href="#">Product</a></li>
				<li><a href="#">Works</a></li>
				<li><a href="#">Links</a></li>
				<li><a href="#">Contact Us</a></li>
			</ul>
		</nav>
	<!-- /.inner --></div>
</header>

<div id="contents">
	<p>コンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツ</p>
	<p>コンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツ</p>
		<p>コンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツ</p>
		<p>コンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツコンテンツ</p>
	<!-- /#contents --></div>
<!-- /#wrap --></div>
!

CSS 

              
                html, body, div, span, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
abbr, address, cite, code,
del, dfn, em, img, ins, kbd, q, samp,
small, strong, sub, sup, var,
b, i,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, dialog, figure, footer, header,
hgroup, menu, nav, section,
time, mark, audio, video {
		-webkit-transition: 0.3s ease-in-out;
		-moz-transition: 0.3s ease-in-out;
		transition: 0.3s ease-in-out;
}

.clearfix:before,
.clearfix:after {
    content: " ";
    display: table;
}

.clearfix:after {
    clear: both;
}

.clearfix {
    *zoom: 1;
}

body {
	font-family: 'Questrial', Verdana, "ヒラギノ角ゴ ProN W3", "Hiragino Kaku Gothic ProN", "メイリオ", Meiryo, sans-serif;
}

.fixed {
	position:fixed;
	top:0;
	left:0;
	width:100%;
}

/* オーバーレイ */
.overlay {
		position: fixed;
		top: 0;
		left: 0;
		display: none;
		width: 100%;
		height: 100%;
		background: #000;
		opacity: 0.7;
		filter: alpha(opacity=70);
		-ms-filter: "alpha(opacity=70)";
		z-index: 999;
}

/* ヘッダー */
header  {
	position:fixed;
	top:0;
	left:0;
	width:100%;
	background:#fff;
	box-shadow: 0 2px 5px rgba(0,0,0,0.26);
	z-index:9999;
	-webkit-user-select:none;
	-moz-user-select:none;
	user-select:none;
}
header .inner {
	position:relative;
	max-width:1080px;
	margin:0 auto;
	padding:1.5em 0;
	-webkit-box-sizing:border-box;
	-moz-box-sizing:border-box;
	box-sizing:border-box;
}
header h1 {
	float:left;
	width:20%;
	margin-top: 1em;
	font-size:1.5em;
	font-weight:bold;
}

/* ナビゲーション */
header nav {
	float:right;
	width: 80%;
}
/* ナビゲーション：アクティブ時 */
header.navOpen nav {
		opacity: 1;
		right: 0;
}
header nav ul {
	width: 100%;
	border-top:1px solid #ccc;
}
header nav ul li {
	float:left;
	width: 16.6666%;
	border-bottom:1px solid #ccc;
}
header nav ul li a {
	position:relative;
	display:block;
	padding:1.5em;
	color:#999;
	text-decoration:none;
}
header nav ul li a:hover {
	background:#f2f2f2;
}
header nav ul li a:before {
	position: absolute;
  top: 50%;
  right: 1.5em;
  display: inline-block;
  content: "";
  width: 7px;
  height: 7px;
  margin-top: -4px;
  margin-right: -4px;
  vertical-align: middle;
	border-top: 3px solid #E60012;
  border-right: 3px solid #E60012;
  -webkit-transform: rotate(45deg);
  transform: rotate(45deg);
  -ms-transform: rotate(45deg);
}

/* ナビゲーションアイコン */
header .navBtn {
		display: none;
		width: 30px;
		position: absolute;
		top: 24px;
		right: 15px;
		cursor: pointer;
}
header .navBtn span {
		display: block;
		height: 4px;
		width: 100%;
		background: #E60012;
		border-radius: 2px;
		-webkit-transition: all .5s ease-in-out;
		-moz-transition: all .5s ease-in-out;
		transition: all .5s ease-in-out;
}
header .navBtn span:nth-of-type(2),
header .navBtn span:nth-of-type(3) {
		margin-top: 5px;
}
/* ナビゲーションアイコン：アクティブ */
header.navOpen .navBtn span:nth-of-type(1) {
		-webkit-transform: translateY(9px) translateX(0) rotate(45deg);
		-ms-transform: translateY(9px) translateX(0) rotate(45deg);
		transform: translateY(9px) translateX(0) rotate(45deg);
}
header.navOpen .navBtn span:nth-of-type(2) {
		margin-top: 5px;
		opacity: 0;
		-webkit-transform: translateY(9px);
		-ms-transform: translateY(9px);
		transform: translateY(9px);
}
header.navOpen .navBtn span:nth-of-type(3) {
		-webkit-transform: translateY(-9px) translateX(0) rotate(-45deg);
		-ms-transform: translateY(-9px) translateX(0) rotate(-45deg);
		transform: translateY(-9px) translateX(0) rotate(-45deg);
}

#contents {
	max-width: 1080px;
	margin:120px auto 0;
	padding:1em 1.5em;
	line-height:1.5;
}
#contents p {
	margin-bottom:1em;
}

/* レスポンシブ */
@media screen and (max-width:1080px){
	header .inner {
		padding: 1.5em;
	}
	header h1 {
		width: 30%;
		margin-top: 0em;
	}
	header nav {
		width:70%;
	}
	header nav ul li {
		width: 33.333%;
	}
	#contents {
		margin-top:180px;
	}
}
@media screen and (max-width:640px){
	header h1 {
		width: auto;
		margin-top: 0;
	}
	header .navBtn {
		display:block;
	}
	header nav {
			overflow:auto;
			position: fixed;
			top: 0;
			right: -70%;
			float:none;
			width: 70%;
			max-width:320px;
			height: 100%;
			background: #fff;
			opacity: 0;
			z-index:9999;
	}
	header nav ul li {
		float: none;
		width: auto;
	}
	#contents {
		margin-top:80px;
	}
}
!

JS 

              
                // =======================================================================
// ナビゲーションアイコン
// =======================================================================

// オーバーレイ作成
$('#contents').prepend('<div class="overlay"></div>');

// アイコンをクリックしたら
$('.navBtn').click(function() {
		$('header').toggleClass('navOpen'); // class付与/削除
		$('#wrap').toggleClass('fixed'); // コンテンツを固定/解除
		$('.overlay').toggle(); // オーバーレイ表示/非表示

		// スマホナビゲーションがヘッダーに被らないようにする
		var headerH = $('header').outerHeight();
		if ($('header').hasClass('navOpen')) {
				$('header nav').css('marginTop', headerH + 'px'); //ヘッダーの高さ分マージンを付ける
		}
});

// オーバーレイをクリックしたら
$('.overlay').click(function() {
		$(this).fadeOut(300); // オーバーレイ非表示
		$('header').removeClass('navOpen'); // class削除
		$('#wrap').removeClass('fixed'); // 固定解除
});

// スマホサイズからPCになったとき
$(window).on('load resize', function() {
		var breakpoint = 640;
		if (window.innerWidth > breakpoint) {
				$('header').removeClass('navOpen'); // class削除
				$('#wrap').removeClass('fixed'); // 固定解除
				$('.overlay').hide(); // オーバーレイ非表示
				$('header nav').css('marginTop', 0 + 'px'); // マージン削除
		}
});
!
999px

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