.articles img {
	margin: 0 2% 0 0;
	width: 31%;
	float:left;
}
.articles .featured img {
	margin: 0 0 1em 0;
	float: none;
	width: 100%;
}
@media screen and (min-width:50em) {
	.articles .featured img {
		margin: 0 1em 0 0;
		float: left;
		width: 50%;
	}
}