<div class="test">
			<div></div>
			<div></div>
		</div>

	.test{
			width: 200px;
			height: 200px;
			margin-top: 200px;
			margin-left: 300px;
			overflow: hidden;
			background-color: red;
		}
		.test div{
			width: 100%;
			height: 100%;
			transition: 500ms;
		}
		.test div:last-child{
			background-color: green;
		}
		.test:hover div{
			transform: translateY(-100%);
		}