Edit in JSFiddle

<a id="update" href="#"><i class="icon-refresh"></i></a>

.icon-refresh-animate {
	animation-name: rotateThis;
	animation-duration: .5s;
	animation-iteration-count: infinite;
	animation-timing-function: linear;
}

@keyframes rotateThis {
	from { transform: scale( 1 ) rotate( 0deg );   }
	to   { transform: scale( 1 ) rotate( 360deg ); }
}