.column-silde .col-list .hve-tree-node{position:relative;padding-left:calc(16px + var(--level,0)*20px)}.hve-tree-node:not([data-level="0"])::before{content:"";position:absolute;left:calc(var(--level)*20px);top:0;width:8px;height:50%;border-left:1px solid #ccc;border-bottom:1px solid #ccc}