.bigimg{width:600px;position: fixed;left: 0;top: 0;right: 0;bottom: 0;margin:auto;display: none;z-index:9999;border: 10px solid #fff}.mask{position: fixed;left: 0;top: 0;right: 0;bottom: 0;background-color:rgba(0,0,0,0.5);z-index: 9800;transition:all 1s;display: none}.bigbox{width:840px;background: #fff;border:1px solid #ededed;margin:0 auto;border-radius: 10px;overflow: hidden;padding:10px}.bigbox>.imgbox{width:400px;float: left;border-radius: 5px;overflow: hidden;margin: 0 10px 10px 10px}.bigbox>.imgbox>img{width:100%}.mask>img{position: fixed;right:10px;top: 10px;width: 60px}.mask>img:hover{cursor:pointer}