@keyframes heartbeat {
	0% { transform: scale(1.0); }
	30% { transform: scale(1.3); }
	100% { transform: scale(1.0); }
}
html,body {
	height: 100%;
	color: white;
}
body {
	background-color: #2196F3;
	display: flex;
	justify-content: center;
	align-items: center;
}
body.error {
	background-color: #F44336;
}
.heartrate {
	font-size: 10rem;
	cursor:pointer;
}
.icon {
	display: inline-block;
}
.icon.animate {
	animation-name: heartbeat;
	animation-duration: 1s;
	animation-iteration-count: infinite;
}