div.main section > article > a
{
	display: table;
	float: left;
	height: 270px;
	text-align: center;
	width: 400px;
}

div.main section > article > a > div
{
	display: table-cell;
	height: 100%;
	text-align: center;
	vertical-align: middle;
	width: 100%;
}

div.main section > article > a > div > img
{
	height: 150px;
}