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HTML

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CSS

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CSS Base

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JavaScript

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

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Babel includes JSX processing.

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HTML 

              
                .container
	a.button.is-play(href="#")
		.button-outer-circle.has-scale-animation
		.button-outer-circle.has-scale-animation.has-delay-short
		.button-icon.is-play
			svg(height="100%" width="100%" fill="#f857a6")
				polygon.triangle(points="5,0 30,15 5,30" viewBox="0 0 30 15")
				path.path(d="M5,0 L30,15 L5,30z" fill="none" stroke="#f857a6" stroke-width="1")
!

CSS 

              
                colors = {
	main : #f857a6,
	second : #ff5858
}

body
	background: linear-gradient(to right, colors.main, colors.second)
	
@keyframes fadeIn
	from
		opacity: 0
	to
		opacity: 1
	
@keyframes triangleStroke
	from 
		stroke-dashoffset: 90
	to
		stroke-dashoffset: 0
		
@keyframes smallScale
	from
		transform: scale(1)
		opacity: 1
	to
		transform: scale(1.5)
		opacity: 0

.container
	display: flex
	justify-content: center
	align-items: center
	height: 100vh
	width: 100%
	
.button
	display: inline-block
	position: relative
	&.is-play
		background-color: #FFF
		border-radius: 50%
		width: 100px
		height: @width
		.button-outer-circle
			background: rgba(#fff, .2)
			border-radius: 50%
			position: absolute
			top: 0
			left: 0
			right: 0
			bottom: 0
			height: 100%
			width: 100%
		.button-icon
			position: absolute
			top: 50%
			left: 50%
			width: 30px
			height: @width
			transform: translate(-50%, -50%)
			.triangle
				animation: fadeIn 7s ease
			.path
				stroke-dasharray: 90
				stroke-dashoffset: 0
				animation: triangleStroke 3s
				animation-timing-function: ease
				
.has-scale-animation
	animation: smallScale 3s infinite

.has-delay-short
	animation-delay: .5s
!

JS
!
999px

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