Simple Slide Animation

<section>
	<div class="box">
		<div class="item"></div>
	</div>
	<div class="box">
		<div class="item reverse"></div>
	</div>
	<div class="box">
		<div class="item alternate"></div>
	</div>
	<div class="box">
		<div class="item alternate-reverse"></div>
	</div>
</section>