.upload-list{display:inline-block;width:90px;height:60px;text-align:center;line-height:60px;border:1px solid transparent;border-radius:4px;overflow:hidden;background:#fff;position:relative;box-shadow:0 1px 1px rgba(0,0,0,.2);margin-right:5px}.upload-list img{width:100%;height:60px}.upload-list-cover{display:none;position:absolute;top:0;bottom:0;left:0;right:0;background:rgba(0,0,0,.6)}.upload-list:hover .upload-list-cover{display:block}.upload-list-cover i{color:#fff;font-size:20px;cursor:pointer;margin:0 2px}.tree-bar{max-height:500px;overflow:auto;margin-top:5px}.tree-bar::-webkit-scrollbar{width:6px;height:6px}.tree-bar::-webkit-scrollbar-thumb{border-radius:4px;-webkit-box-shadow:inset 0 0 2px #d1d1d1;background:#e4e4e4}.ivu-tree .ivu-tree-empty{margin-top:10px;font-size:12px}