.custom-tree /deep/ .ant-menu-item-group-title{position:relative}.custom-tree /deep/ .ant-menu-item-group-title:hover .btn,.custom-tree /deep/ .ant-menu-item:hover .btn{display:block}.custom-tree /deep/ .btn{display:none;position:absolute;top:0;right:.052083rem;width:.104167rem;height:.208333rem;line-height:.208333rem;z-index:1050}.custom-tree /deep/ .btn:hover{-webkit-transform:scale(1.2);transform:scale(1.2);-webkit-transition:all .5s;transition:all .5s}