.pic {
	width: 23.7%;
	max-height: 200px;
	position: relative;
	overflow: hidden;
	margin: 0.5%;
	display: inline-block;
	animation: anima 2s;
	-webkit-animation: anima 2s;
	-moz-animation: anima 2s;
	backface-visibility: hidden;
	-webkit-backface-visibility: hidden
}
.pic-3d {
	-webkit-perspective: 500;
	-webkit-transform-style: preserve-3d
}
.pic-caption {
	cursor: default;
	position: absolute;
	width: 100%;
	height: 100%;
	background: rgba(44,62,80,0.92);
	padding: 10px;
	text-align: center;
	-ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=($opacity * 100))";
	filter: alpha(opacity=0);
	-moz-opacity: 0;
	-khtml-opacity: 0;
	opacity: 0
}
.pic-image {
	-webkit-transform: scale(1.1);
	transform: scale(1.1)
}
.pic:hover .pic-image {
	-webkit-transform: scale(1);
	transform: scale(1)
}
.pic-title {
	font-size: 1.8em
}
.pic .pic-image, .pic-caption, .pic:hover .pic-caption, .pic:hover img {
	-webkit-transition: all 0.5s ease;
	-moz-transition: all 0.5s ease;
	-o-transition: all 0.5s ease;
	transition: all 0.5s ease
}
.preview-icon {
	display: block;
	margin: auto;
	width: 30px;
}
.preview {
	width: 100%;
	text-align: center;
	color: #fff;
	float: left;
	margin-top: 60px;
	font-size: 16px;
}
.choose {
	width: 48%;
	text-align: center;
	color: #fff;
	float: left;
	margin-top: 60px;
	font-size: 16px;
}
.pic:hover .bottom-to-top, .pic:hover .top-to-bottom, .pic:hover .left-to-right, .pic:hover .right-to-left, .pic:hover .rotate-in, .pic:hover .rotate-out, .pic:hover .open-up, .pic:hover .open-down, .pic:hover .open-left, .pic:hover .open-right, .pic:hover .come-left, .pic:hover .come-right {
	-ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=($opacity * 100))";
	filter: alpha(opacity=100);
	-moz-opacity: 1;
	-khtml-opacity: 1;
	opacity: 1
}
.bottom-to-top {
	top: 50%;
	left: 0
}
.pic:hover .bottom-to-top {
	top: 0;
	left: 0
}
.top-to-bottom {
	bottom: 50%;
	left: 0
}
.pic:hover .top-to-bottom {
	left: 0;
	bottom: 0
}
.open-up {
	transform: rotateX(180deg);
	-webkit-transform: rotateX(180deg);
	top: 0;
	left: 0
}
.pic:hover .open-up {
	transform: rotateX(0);
	-webkit-transform: rotateX(0)
}
.open-left {
	transform: rotateY(180deg);
	-webkit-transform: rotateY(180deg);
	left: 0;
	top: 0
}
.pic:hover .open-left {
	transform: rotateY(0deg);
	-webkit-transform: rotateY(0deg)
}
@media screen and (max-width: 900px) {
.pic {
	width: 31.5%;
	margin: 0.5%;
}
}
@media screen and (max-width: 620px) {
.pic {
	width: 48%;
	margin: 0.5%;
}
}
@media screen and (max-width: 480px) {
.pic {
	width: 96%;
	margin: 1%;
}
}