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CSS

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HTML 

              
                <a class="video-link" href="https://youtu.be/mjpI68ZGD5U" target="_blank">
	<div class="video-info">
		<div class="video-thumbnail" style="background-image: url('https://i.ytimg.com/vi/mjpI68ZGD5U/maxresdefault.jpg');"></div>
		<div class="video-title">Let's Codepen</div>
		<div class="video-meta">#4 CSS Hover Animation - clip: rect()</div>
	</div>
	<div class="video-cta">
		<div class="video-cta-logo">
			<svg class="youtube-logo" enable-background="new 0 0 128 128" height="128px" id="Layer_1" version="1.1" viewBox="0 0 128 128" width="128px" xml:space="preserve" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g><circle cx="64" cy="64" fill="#CC191E" r="64"/></g><path d="M103.201,48.004c0,0-0.781-5.513-3.18-7.939c-3.043-3.187-6.453-3.203-8.016-3.389  c-11.191-0.81-27.988-0.81-27.988-0.81h-0.036c0,0-16.795,0-27.988,0.81c-1.564,0.186-4.972,0.201-8.015,3.389  c-2.399,2.426-3.18,7.939-3.18,7.939S24,54.478,24,60.953v6.071c0,6.471,0.799,12.947,0.799,12.947s0.781,5.51,3.18,7.938  c3.044,3.189,7.041,3.088,8.82,3.422c6.401,0.615,27.202,0.805,27.202,0.805s16.81-0.025,28.005-0.834  c1.564-0.188,4.975-0.203,8.016-3.391c2.4-2.43,3.182-7.939,3.182-7.939S104,73.496,104,67.023v-6.071  C104,54.478,103.201,48.004,103.201,48.004 M54.729,75.428l-0.003-24.581l23.637,12.332L54.729,75.428z" fill="#FFFFFF"/></svg>		
		</div>
		<div class="video-cta-text">
			Watch Video
		</div>
	</div>

</a>
!

CSS 

              
                // Variables =============================================================
$font-family: "Open Sans", Helvetica, Arial, sans-serif

// Mixins ================================================================
=absolute($top, $left, $right, $bottom)
	position: absolute
	top: $top
	left: $left
	right: $right
	bottom: $bottom

=translate($x,$y)
	-webkit-transform: translate($x,$y)
	-webkit-transform: translate3d($x,$y,0)
	-ms-transform: translate($x,$y)
	-ms-transform: translate3d($x,$y,0)
	transform: translate($x,$y)
	transform: translate3d($x,$y,0)

// Colors ================================================================
// Boomer Colors
$boom: #330066
$boom-dk: darken($boom, 2%)
$boom-lt: #9966CC

// Font Colors
$font-dark: #333

// Base colors
$grey: #BDC4D0
$background-light: #F3F4F8
$background-dark: #2F3032
$border-light: darken($background-light, 2%)
$border-dark: darken($background-dark, 2%)
$primary-color: #004983

// Base ==================================================================
*:not(i)
	font-family: $font-family

html
	height: 100%
	font-size: 16px

body
	height: 100%
	background: $background-light

.video-link
	position: fixed
	right: 0
	bottom: 20px
	width: 200px
	height: 45px
	text:
		decoration: none
	background: none
	border-top-left-radius: 24px
	border-bottom-left-radius: 24px
	box-shadow: 2px -2px 30px rgba(0,0,0,0.2)
	cursor: pointer

	&:hover
		.video-info
			visibility: visible
			clip: rect(-50px,200px,225px,-50px)
			transition: clip 0.5s cubic-bezier(0.65, 0.05, 0.36, 1)
			opacity: 1

.video-info
	visibility: hidden
	display: flex
	flex:
		direction: column
	+absolute(0,0,0,null)
	height: 225px
	padding-bottom: 25px
	background: white
	box-sizing: border-box
	+translate(0,-200px)
	transition: visibility 0.2s 0.30s, opacity 0.2s 0.30s, clip 0.5s cubic-bezier(0.65, 0.05, 0.36, 1)
	clip: rect(200px,200px,225px,0)
	will-change: clip
	opacity: 0

	&:after
		display: block
		content: ''
		+absolute(0,0,0,0)
		height: 225px
		background: none
		box-shadow: 2px -2px 30px rgba(0,0,0,0.2)

	.video-title
		display: flex
		flex:
			direction: column
			grow: 0
			shrink: 0
			basis: auto
		align-items: flex-start
		justify-content: flex-end
		height: 36px
		padding: 10px 10px 5px
		font:
			size: 13px
			weight: 700
		letter-spacing: 0.5px
		color: #333
		box-sizing: border-box

	.video-thumbnail
		flex:
			grow: 0
			shrink: 0
			basis: auto
		height: 112.5px
		background:
			size: cover
			position: center center
	
	.video-meta
		display: flex
		flex:
			direction: column
			grow: 1
			shrink: 0
			basis: auto	
		align-items: flex-start
		justify-content: flex-start	
		padding: 0px 10px 10px
		font:
			size: 13px
			weight: 400
		text:
			align: left
		letter-spacing: 1px
		color: #333

.video-cta
	display: flex
	position: relative
	align-items: center
	background: white
	border-top-left-radius: 24px
	border-bottom-left-radius: 24px

	.video-cta-logo
		flex:
			grow: 0
			shrink: 0
		height: 45px
	
		.youtube-logo
			width: 45px
			height: 45px

	.video-cta-text
		flex:
			grow: 1
		padding-left: 20px
		font:
			size: 14px
			weight: 700
		text:
			align: left
		letter-spacing: 1px
		color: #333
!

JS
!
999px

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