.ch-grid {
	margin: 20px 0 35px 0;
	padding: 0;
	list-style: none;
	display: block;
	text-align: center;
	width: 100%;
	position:relative;
}

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

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

.ch-grid li {
	width: 325px;
	height: 325px;
	display: inline-block;
	margin: 15px;	
	padding:15px;
	position:relative;
	background:url('../images/bg-circle.png') no-repeat scroll center center;
	background-size:100%;
}


.ch-grid li:hover {
	background:url('../images/bg-circle2.png') no-repeat scroll center center;
	background-size:100%;
}