@if $use-rollIn == true {

	// originally authored by Nick Pettit - https://github.com/nickpettit/glide

	@-webkit-keyframes rollIn {
		0% { opacity: 0; -webkit-transform: translateX(-100%) rotate(-$base-degrees * 4); }
		100% { opacity: 1; -webkit-transform: translateX(0px) rotate(0deg); }
	}

	@-moz-keyframes rollIn {
		0% { opacity: 0; -moz-transform: translateX(-100%) rotate(-$base-degrees * 4); }
		100% { opacity: 1; -moz-transform: translateX(0px) rotate(0deg); }
	}

	@-o-keyframes rollIn {
		0% { opacity: 0; -o-transform: translateX(-100%) rotate(-$base-degrees * 4); }
		100% { opacity: 1; -o-transform: translateX(0px) rotate(0deg); }
	}

	@keyframes rollIn {
		0% { opacity: 0; transform: translateX(-100%) rotate(-$base-degrees * 4); }
		100% { opacity: 1; transform: translateX(0px) rotate(0deg); }
	}

	.rollIn {
		@include animate-prefixer(animation-name, rollIn);
	}

}