.ch-grid {
	margin: 20px 0 0 0;
	padding: 0;
	list-style: none;
	display: block;
	text-align: center;
	width: 100%;
}

.ch-item img {
	width: 100%;
}

.ch-grid:after,
.ch-item:before {
	content: '';
    display: table;
}

.ch-grid:after {
	clear: both;
}

.ch-grid li {
	width: 100%;
	display: inline-block;
	margin: .5%;
}

@media screen and (min-width: 479px) {
	.ch-grid li {
		width: 40%;
	}
}

@media screen and (min-width: 768px) {
	.ch-grid li {
		width: 26%;
	}
}

@media screen and (min-width: 1120px) {
	.ch-grid li {
		width: 32%;
	}
}