.ch-grid {
	margin:0;
	padding: 0;
	list-style: none;
	display: block;
	text-align: center;
	width: 1000px; height:auto;
}

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

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

.ch-grid li {
	width: 235px;
	height: 235px;
	float:left;
	display: inline-block;
	margin-right:20px;
}

.ch-grid li:nth-child(4n) { margin-right: 0; }

.ch-item {
	width: 100%;
	height: 100%;
	border-radius: 50%;
	position: relative;
	cursor: default;
	-webkit-perspective: 900px;
	-moz-perspective: 900px;
	-o-perspective: 900px;
	-ms-perspective: 900px;
	perspective: 900px;
}
.ch-info{
	position: absolute;
	width: 100%;
	height: 100%;
	-webkit-transform-style: preserve-3d;
	-moz-transform-style: preserve-3d;
	-o-transform-style: preserve-3d;
	-ms-transform-style: preserve-3d;
	transform-style: preserve-3d;
}
.ch-info > div {
	display: block;
	position: absolute;
	width: 100%;
	height: 100%;
	border-radius: 50%;
	background-position: center center;
	-webkit-transition: all 0.3s linear;
	-moz-transition: all 0.3s linear;
	-o-transition: all 0.3s linear;
	-ms-transition: all 0.3s linear;
	transition: all 0.3s linear;
	-webkit-transform-origin: 50% 0%;
	-moz-transform-origin: 50% 0%;
	-o-transform-origin: 50% 0%;
	-ms-transform-origin: 50% 0%;
	transform-origin: 50% 0%;
}

.ch-info .ch-info-front {
	box-shadow: inset 0 0 0 16px rgba(255,255,255,0.6);
}

.ch-info .ch-info-back {
	-webkit-transform: translate3d(0,0,-220px) rotate3d(1,0,0,90deg);
	-moz-transform: translate3d(0,0,-220px) rotate3d(1,0,0,90deg);
	-o-transform: translate3d(0,0,-220px) rotate3d(1,0,0,90deg);
	-ms-transform: translate3d(0,0,-220px) rotate3d(1,0,0,90deg);
	transform: translate3d(0,0,-220px) rotate3d(1,0,0,90deg);
	background: #f58220;
	opacity: 0;
}

.ch-img-1 { 
	background-image: url(../images/our_project_thumb1.jpg);
}

.ch-img-2 { 
	background-image: url(../images/our_project_thumb2.jpg);
}

.ch-img-3 { 
	background-image: url(../images/our_project_thumb3.jpg);
}

.ch-img-4 { 
	background-image: url(../images/our_project_thumb4.jpg);
}

.ch-info h3 {
	color: #fff;
	font:300 16px 'Open Sans', sans-serif;
	margin: 0 15px;
	padding:70px 0 0 0;
	height:auto;
}

.ch-info p {
	color: #fff;
	font:12px 'Open Sans', sans-serif;
	padding: 10px 5px;
	margin:10px 30px;
	border-top: 1px solid rgba(255,255,255,0.5);
}

.ch-info p a {
	display: block;
	color: #fff;
	color: rgba(255,255,255,1);
	padding-top: 4px;
	font:400 12px 'Open Sans', sans-serif; text-decoration:none; text-transform:uppercase;
}

.ch-info p a:hover {
	color: #333;
	color: rgba(51,51,51,1);
}

.ch-item:hover .ch-info-front {
	-webkit-transform: translate3d(0,280px,0) rotate3d(1,0,0,-90deg);
	-moz-transform: translate3d(0,280px,0) rotate3d(1,0,0,-90deg);
	-o-transform: translate3d(0,280px,0) rotate3d(1,0,0,-90deg);
	-ms-transform: translate3d(0,280px,0) rotate3d(1,0,0,-90deg);
	transform: translate3d(0,280px,0) rotate3d(1,0,0,-90deg);
	opacity: 0;
}

.ch-item:hover .ch-info-back {
	-webkit-transform: rotate3d(1,0,0,0deg);
	-moz-transform: rotate3d(1,0,0,0deg);
	-o-transform: rotate3d(1,0,0,0deg);
	-ms-transform: rotate3d(1,0,0,0deg);
	transform: rotate3d(1,0,0,0deg);
	opacity: 1;
}