.preview_popup .layer_right .inner .detail_cont{padding-bottom:80px}.preview_popup .layer_right .inner .btn_set{position:absolute;width:100%;bottom:0;padding:10px;background:#fff;-webkit-box-sizing:border-box;box-sizing:border-box}.layer_right .metadata .file_info>span{padding:12px}.preview_popup .layer_right .inner .btn_set>div{position:relative;top:auto;right:auto}.preview_popup .layer_right .inner .btn_set>div.left{float:left}.preview_popup .layer_right .inner .btn_set>div.right{float:right}.preview_popup .layer_right .inner .btn_close{position:absolute;top:15px;right:15px}