html,
body {
	width: 100%;
	height: 100%;
	margin: 0;
	padding: 0;
}

.container {
	position: relative;
	width: 100%;
	height: 100%;
}

.parent {
	position: relative;
	width: 25%;
	height: 40%;
	float: left;
	margin: 12.5%;
	overflow: hidden;
}

.parent img {
	position: absolute;
	top: -9999px;
	bottom: -9999px;
	left: -9999px;
	right: -9999px;
	margin: auto;
}