.ch-grid {
	margin:  0;
	padding-top: 10px;
	list-style: none;
	display: block;
	text-align: center;
	width: 100%;
}

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

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

.ch-grid li {
	width: 128px;
	height: 52px;
	display: inline-block;
}
.main{
	margin: 0 auto;
	position: relative;
	overflow:hidden;
}

.ch-grid7 {	
	margin:  0;
	list-style: none;
	display: block;
	text-align: center;
	width: 100%;
}

.ch-grid7:after,
.ch-item7:before {
	content: '';
    display: table;
}

.ch-grid7:after {
	clear: both;
}

.ch-grid7 li {
	padding-left:20px;
	padding-right:20px;
	width: 277px;
	height: 275px;
	display: inline-block;
}