* {
	margin: 0;
	padding: 0;
}

html, body {
	height: 100%;
	width: 100%;
}

body {
	background-color: #0a0f23;
	display: table;
	margin: 0 auto;
}

#above {
	display: table-row;
}

#below {
	display: table-row;
	height: 100%;
	text-align: center;
	vertical-align: top;
}

#heart {
	background-image: url('images/heart.svg');
	background-repeat: no-repeat;
	display: inline-block;
	height: 24px;
	opacity: 0;
	position: relative;
	top: -18.5px;
	width: 24px;
	z-index: 1;
}

.playing #heart {
	animation-duration: 12s;
	animation-iteration-count: infinite;
	animation-name: throb;
	animation-timing-function: linear;
}

@keyframes throb {
	0% {
		opacity: 0;
		transform: scale(1);
	}

	12.5% {
		opacity: 0;

		transform: scale(1);
	}

	37.5% {
		opacity: 1;
		transform: scale(2);
	}

	62.5% {
		opacity: 1;
		transform: scale(2);
	}

	87.5% {
		opacity: 0;
		transform: scale(1);
	}

	100% {
		opacity: 0;
		transform: scale(1);
	}
}

#play {
	background-color: #000;
	background-image: url('images/play.svg');
	background-repeat: no-repeat;
	background-size: 96px 96px;
	background-position: center;
	bottom: 0;
	left: 0;
	opacity: .75;
	position: fixed;
	right: 0;
	top: 0;
	z-index: 2;
}

.playing #play {
	opacity: 0;
}