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HTML

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Adding Classes

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About the <head>

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Insecure Resource

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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

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

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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.

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HTML 

              
                <!-- <p>Hint: Design a credit card checkout form or page. Don't forget the important elements such as the numbers, dates, security numbers, etc. (It's up to you!) Don't forget to share on Dribbble and/or Twitter when you're done.</p> -->

<div class="container">
	
	<div class="breadcrumbs">
		<div class="breadcrumb-item">
			<span class="number">1</span>
			<span class="label">Name & Address</span>
		</div>
		<div class="breadcrumb-item">
			<span class="number">2</span>
			<span class="label">Shipping</span>
		</div>
		<div class="breadcrumb-item current">
			<span class="number">3</span>
			<span class="label">Payment</span>
		</div>
		<div class="breadcrumb-item">
			<span class="number">4</span>
			<span class="label">Review Order</span>
		</div>
	</div>
	
	<div class="product">
		<img src="https://image.rakuten.co.jp/footmonkey/cabinet/newbalance/nb-wl555-sj-1.jpg">
		<h3>555 New Balance</h3>
		<p>$69.99</p>
		
		<table class="information">
			<tr>
				<td class="label">Style #:</td>
				<td>WL696CCA</td>
			</tr>
			<tr>
				<td class="label break">Color:</td>
				<td>Grey & mint</td>
			</tr>
			<tr>
				<td class="label">Subtotal:</td>
				<td>$69.99</td>
			</tr>
			<tr>
				<td class="label">Tax:</td>
				<td>$5.60</td>
			</tr>
			<tr>
				<td class="label break">Shipping:</td>
				<td>$5.00</td>
			</tr>
			<tr>
				<td class="label">Total</td>
				<td class="label">$80.59</td>
			</tr>
		</table>
	</div>
	
	<form>
		<div class="input-group">
			<label for="cc-number">Credit Card Number</label>
			<input type="text" name="cc-number">
		</div>

		<div class="cc-info">
			<div class="input-group month">
				<label>Month</label>
				<input type="number" name="exp-month" min="1" max="12">
			</div>

			<label class="slash">/</label>

			<div class="input-group year">
				<label>Year</label>
				<input type="number" name="exp-year" min="2016" max="2025">
			</div>

			<div class="input-group ccv">
				<label for="ccv">Security Code</label>
				<input type="number" name="ccv">
			</div>
		</div>
		
		<button>Next</button>
	</form>
</div>
!

CSS 

              
                @import url(https://fonts.googleapis.com/css?family=Roboto+Condensed:400,700|Roboto:400,700);

body {
	font-family: 'Roboto', san-serif;
	background-color: #D7FEDB;
	height: 100%;
	width: 100%;
	min-width: 1000px;
	display: flex;
	justify-content: center;
	align-items: center;
	margin: 0;
	position: absolute;
}

.container {
	width: 1000px;
	background-color: #FFF;
	box-shadow: 0 0 20px 0 #457F4B;
}

.breadcrumbs {
	background-color: #61B269;
	color: #FFF;
	display: flex;
	font-size: 14px;
	position: relative;
}

.breadcrumb-item {
	padding-left: 30px;
}

.breadcrumb-item:first-child {
	padding-left: 10px;
}

.breadcrumb-item .number {
	display: block;
	background-color: #457F4B;
	width: 8px;
	height: 16px;
	border-radius: 15px;
	padding: 6px 10px;
	float: left;
	margin: 13px 0 0 10px;
}

.breadcrumb-item .label {
	display: block;
	padding: 20px 0 20px 10px;
	float: left;
}

.breadcrumb-item::after {
	content: '';
	display: block;
	width: 35px;
	height: 35px;
	transform: rotate(130deg) skew(-10deg);
	float: right;
	position: relative;
	top: 10px;
	left: 19px;
	border-top: 1px solid #457F4B;
	border-left: 1px solid #457F4B;
	background-color: #61B269;
}

.breadcrumb-item.current,
.breadcrumb-item.current::after{
	background-color: #457F4B;
}

.breadcrumb-item.current .number {
	background-color: #61B269;
}

.product {
	margin-left: 30px;
	padding: 20px;
	width: 400px;
	float: left;
}

.product img {
	width: 200px;
	float: left;
	margin-right: 20px;
}

.product h3 {
	font-family: 'Roboto Condensed', san-serif;
	margin: 15px 0 0;
	text-decoration: underline;
}

.product p {
	margin: 0;
}

.product .details {
	margin-top: 20px;
}

.product .information {
	line-height: 1em;
	position: relative;
	right: 3px;
	margin-top: 20px;
}

.product .information td {
	vertical-align: top;
}

.product .label {
	font-weight: bold;
}

.product .break {
	padding-bottom: 20px;
}

form {
	float: right;
	background-color: #EEE;
	width: 360px;
	padding: 60px 80px 46px;
}

.cc-info {
	display: flex;
}

.cc-info input, .cc-info label {
	padding-left: 2px;
}

.input-group {
	height: 50px;
	margin: 0 0 20px;
}

.month{
	width: 65px;
	margin-right: 10px;	
}

.year {
	width: 65px;
	margin-right: 90px;
}

.slash {
	width: 15px;
}

.ccv {
	width: 113px;
}

label, input {
	display: block;
	width: 100%;
	height: 30px;
	font-size: 16px;
}

label {
	z-index: 1;
	transition: opacity 0.2s ease-in-out;
	color: #666;
}

input {
	border-top: 0;
	border-left: 0;
	border-right: 0;
	border-bottom: 2px solid #61B269;
	position: relative;
	top: -37px;
	background-color: transparent;
	transition: border-bottom 0.2s ease-in-out;
}

input:focus {
	outline: none;
}

button {
	display: block;
	background-color: #457F4B;
	border: 0;
	color: #FFFFFF;
	font-size: 18px;
	padding: 10px 20px;
	transition: background-color 0.2s ease-in-out;
	outline: none;
	float: right;
}

button:hover {
	cursor: pointer;
	background-color: #61B269;
}


.fadeOut {
	opacity: 0;
}

.fadeIn {
	opacity: 1;
}
!

JS 

              
                var inputs = document.getElementsByTagName('input');

for (var i=0; i<inputs.length; i++) {
	inputs[i].addEventListener('focus', function() {
		this.previousSibling.previousSibling.classList.remove('fadeIn');
		this.previousSibling.previousSibling.classList.add('fadeOut');
	});
	
	inputs[i].addEventListener('blur', function() {
		if (!this.value.length) {
			this.previousSibling.previousSibling.classList.remove('fadeOut');
			this.previousSibling.previousSibling.classList.add('fadeIn');
		}
	});
}
!
999px

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