.zenwrap {
	display: block;
	width: 100%;
	background-color: pink;
}

[class*="zen-"] {
	height: 200px;
	width: 50%;
	float: left;
	position: relative;

	background-color: lightblue;
}
[class*="zen-"]:nth-child(odd) {
	background-color: skyblue;
}


.zenimg {
	background-size: cover;
	background-position: center;
	border: 1px solid #fff;
}


/*684*/
@media (min-width: 760px) {
	.zen-3 { width: 25%; }
	.zen-6 { width: 50%; }
	.zen-9 { width: 75%; }

	.hx2 { height: 400px; }
	.go-up-1 { margin-top: -200px; }
}


/*1188*/
@media (min-width: 1360px) {
	[class*="zen-"] {
		height: 260px;
	}

	.hx2 { height: 520px; }
	.go-up-1 { margin-top: -260px; }
}