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HTML

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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

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About the <head>

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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-.

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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 

              
                <figure class="snip0020">
	<img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/331810/sample18.jpg" alt="sample18"/>
	<figcaption>
		<div><h2>I'm just <span>very</span> selective </h2></div>
		<div>
			<p>.. bout the reality I choose to accept.</p>
			<div class="curl"></div>
		</div>
		<a href="#"></a>
	</figcaption>			
</figure>
<figure class="snip0020 hover">
	<img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/331810/sample17.jpg" alt="sample17"/>
	<figcaption>
		<div><h2>If <span>good</span> things lasted forever</h2></div>
		<div>
			<p>.. would we appreciate how precious they are?</p>
			<div class="curl"></div>
		</div>
		<a href="#"></a>
	</figcaption>			
</figure>
<figure class="snip0020">
	<img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/331810/sample16.jpg" alt="sample16"/>
	<figcaption>
		<div><h2>To make a <span>bad day</span> worse</h2></div>
		<div>
			<p>.. spend it wishing for the impossible.</p>
			<div class="curl"></div>
		</div>
		<a href="#"></a>
	</figcaption>			
</figure>
!

CSS 

              
                @import url(https://fonts.googleapis.com/css?family=Raleway:400,200,300,800);
figure.snip0020 {
  font-family: 'Raleway', Arial, sans-serif;
  color: #fff;
  position: relative;
  overflow: hidden;
  margin: 10px;
  min-width: 220px;
  max-width: 310px;
  max-height: 220px;
  width: 100%;
  background: #000000;
  text-align: center;
}
figure.snip0020 * {
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
}
figure.snip0020 img {
  opacity: 1;
  width: 100%;
  -webkit-transition: opacity 0.35s;
  transition: opacity 0.35s;
}
figure.snip0020 figcaption {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
figure.snip0020 figcaption > div {
  height: 50%;
  overflow: hidden;
  width: 100%;
  position: relative;
}
figure.snip0020 figcaption::before {
  position: absolute;
  top: 50%;
  right: 50%;
  left: 50%;
  height: 2px;
  content: '';
  opacity: 0;
  background-color: rgba(255, 255, 255, 0);
  -webkit-transition: all 0.4s;
  transition: all 0.4s;
  -webkit-transition-delay: 0.6s;
  transition-delay: 0.6s;
}
figure.snip0020 h2,
figure.snip0020 p {
  margin: 0;
  padding: 30px 35px;
  opacity: 0;
  position: absolute;
  width: 100%;
  height: 100%;
  left: 0;
  -webkit-transition: opacity 0.4s, -webkit-transform 0.4s;
  transition: opacity 0.4s,-webkit-transform 0.4s,-moz-transform 0.4s,-o-transform 0.4s,transform 0.4s;
  -webkit-transition-delay: 0.3s;
  transition-delay: 0.3s;
}
figure.snip0020 h2 {
  display: inline-block;
  word-spacing: -0.1em;
  font-weight: 300;
  text-transform: uppercase;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  background-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.3) 0%, transparent 60%, rgba(0, 0, 0, 0.7) 100%);
  -webkit-transform: translate3d(0%, 50%, 0);
  transform: translate3d(0%, 50%, 0);
}
figure.snip0020 h2 span {
  font-weight: 800;
}
figure.snip0020 p {
  font-weight: 300;
  top: 0%;
  color: #000;
  background: #fff;
  background-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.3) 0%, transparent 40%, rgba(0, 0, 0, 0.1) 100%);
  -webkit-transform: translate3d(0%, -50%, 0);
  transform: translate3d(0%, -50%, 0);
}
figure.snip0020 .curl {
  width: 0px;
  height: 0px;
  position: absolute;
  bottom: 0;
  right: 0;
  background: linear-gradient(135deg, #ffffff, #f3f3f3 20%, #cccccc 38%, #bbbbbb 44%, #aaaaaa 50%, rgba(0, 0, 0, 0.7) 50%, rgba(0, 0, 0, 0.5) 60%, rgba(0, 0, 0, 0.4));
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
  transition: all .3s ease;
}
figure.snip0020 .curl:before,
figure.snip0020 .curl:after {
  content: '';
  position: absolute;
  z-index: -1;
  left: 12%;
  bottom: 6%;
  width: 70%;
  max-width: 300px;
  max-height: 100px;
  height: 55%;
  box-shadow: 0 12px 15px rgba(0, 0, 0, 0.3);
  transform: skew(-10deg) rotate(-6deg);
}
figure.snip0020 .curl:after {
  left: auto;
  right: 6%;
  bottom: auto;
  top: 14%;
  transform: skew(-15deg) rotate(-84deg);
}
figure.snip0020 a {
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  position: absolute;
  color: #ffffff;
}
figure.snip0020:hover img,
figure.snip0020.hover img {
  opacity: 0.7;
}
figure.snip0020:hover figcaption h2,
figure.snip0020.hover figcaption h2,
figure.snip0020:hover figcaption p,
figure.snip0020.hover figcaption p {
  -webkit-transform: translate3d(0%, 0%, 0);
  transform: translate3d(0%, 0%, 0);
  -webkit-transition-delay: 0.3s;
  transition-delay: 0.3s;
}
figure.snip0020:hover figcaption h2,
figure.snip0020.hover figcaption h2 {
  opacity: 1;
}
figure.snip0020:hover figcaption p,
figure.snip0020.hover figcaption p {
  opacity: 1;
}
figure.snip0020:hover figcaption::before,
figure.snip0020.hover figcaption::before {
  background: #ffffff;
  left: 0px;
  right: 0px;
  opacity: 1;
  -webkit-transition-delay: 0s;
  transition-delay: 0s;
}
figure.snip0020:hover figcaption .curl,
figure.snip0020.hover figcaption .curl {
  width: 40px;
  height: 40px;
  -webkit-transition-delay: 0.7s;
  transition-delay: 0.7s;
}


/* Demo purposes only */
html {
  height: 100%;
}
body {
  background-color: #212121;
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0;
  height: 100%;
}
!

JS 

              
                /* Demo purposes only */	
$("figure").mouseleave(
  function () {
    $(this).removeClass("hover");
  }
);
!
999px

Console