.ch-item {
	width: 100%;
	height: 100%;
	border-radius: 50%; -moz-border-radius: 50%; -webkit-border-radius: 50%; -khtml-border-radius: 50%;  
	position: relative;
	box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.ch-info-wrap{
	position: absolute;
	width: 180px;
	height: 180px;
	border-radius: 50%; -moz-border-radius: 50%; -webkit-border-radius: 50%; -khtml-border-radius: 50%;  

	-webkit-perspective: 800px;
	-moz-perspective: 800px;
	-o-perspective: 800px;
	-ms-perspective: 800px;
	perspective: 800px;

	-webkit-transition: all 1s ease-in-out;
	-moz-transition: all 1s ease-in-out;
	-o-transition: all 1s ease-in-out;
	-ms-transition: all 1s ease-in-out;
	transition: all 1s ease-in-out;

	top: 20px;
	left: 20px;
	background: #f9f9f9 url(../images/bg.jpg);
	box-shadow: 
		0 0 0 20px rgba(255,255,255,0.2), 
		inset 0 0 3px rgba(115,114, 23, 0.8);

}

.ch-info{
	position: absolute;
	width: 180px;
	height: 180px;
	border-radius: 50%; -moz-border-radius: 50%; -webkit-border-radius: 50%; -khtml-border-radius: 50%;  

	-webkit-transition: all 1s ease-in-out;
	-moz-transition: all 1s ease-in-out;
	-o-transition: all 1s ease-in-out;
	-ms-transition: all 1s ease-in-out;
	transition: all 1s ease-in-out;
		
	-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%; -moz-border-radius: 50%; -webkit-border-radius: 50%; -khtml-border-radius: 50%;  
	background-position: center center;

	-webkit-backface-visibility: hidden;
	-moz-backface-visibility: hidden;
	-o-backface-visibility: hidden;
	-ms-backface-visibility: hidden;
	backface-visibility: hidden;
}

.ch-info .ch-info-back {
	-webkit-transform: rotate3d(0,1,0,180deg);
	-moz-transform: rotate3d(0,1,0,180deg);
	-o-transform: rotate3d(0,1,0,180deg);
	-ms-transform: rotate3d(0,1,0,180deg);
	transform: rotate3d(0,1,0,180deg);
	
	background: #000;
}

.ch-item:hover .ch-info {
	-webkit-transform: rotate3d(0,1,0,-180deg);
	-moz-transform: rotate3d(0,1,0,-180deg);
	-o-transform: rotate3d(0,1,0,-180deg);
	-ms-transform: rotate3d(0,1,0,-180deg);
	transform: rotate3d(0,1,0,-180deg);
}