Waypoints + Animate.css

$(".element").waypoint(function() {
	$(this).addClass("animated zoomInUp");
}, {
	offset: "70%"
});

.element:nth-child(1) {
	-webkit-animation-delay: 0s;
	-o-animation-delay: 0s;
	animation-delay: 0s;
}

.hide {
	opacity: 0;
}

.animated {
	opacity: 1;
}