/**
 * The cicada principle in animations
 * Remember the cicada principle that used prime numbers to make multiple overlaid repeated backgrounds seem more random?
 * There’s no reason it can’t be applied to repeating linear animations too (using primes for the durations, divided by 10)
 */

@keyframes spin { to { transform: rotate(1turn); } }
@keyframes radius { 50% { border-radius: 50%; } }
@keyframes color { 33% { color: orange; } 66% { color: deeppink } }
@keyframes width { 50% { border-width: .3em; } }

.loading:before {
	content: '';
	display: block;
	width: 4em;
	height: 4em;
	margin: 0 auto 1em;
	border: 1.5em solid;
	color: yellowgreen;
	box-sizing: border-box;
	animation:  .7s radius, 1.1s color, 1.3s width;
	animation-timing-function: linear;
	animation-iteration-count: infinite;
}

.loading {
	margin: auto;
}

body {
	margin: 0;
	display: flex;
	min-height: 100vh;
	text-align: center;
	background: #655;
	color: white;
}