@-webkit-keyframes smile-flash {

	from,
	50%,
	to {
		opacity: 1;
	}

	25%,
	75% {
		opacity: 0;
	}
}

@keyframes smile-flash {

	from,
	50%,
	to {
		opacity: 1;
	}

	25%,
	75% {
		opacity: 0;
	}
}

.smile-flash {
	-webkit-animation-name: smile-flash;
	animation-name: smile-flash;
}