.list{
	margin-top:20px;
}

.box{
	cursor:pointer;
	width:296px;
	height:280px;
}

.box img{
	width:296px;
	height:280px;
}

.big_img_box{
	position:fixed;
	left:0px;
	top:0px;
	width:100%;
	height:100%;
	z-index:9999;
	display:none;
}

.big_bg{
	width:100%;
	height:100%;
	background:rgba(0,0,0,0.8);
	cursor:pointer;
}

.big_img{
	position:absolute;
	left:50%;
	top:50%;
    transition: all 0.5s;
    -webkit-transition: all 0.5s;
	max-width:50%;
}