.c-nav-tree.root{margin:8px 0}.c-nav-tree.root.open .triangle{transform:rotate(90deg)}.c-nav-tree.root.open>.btm{display:inherit}.c-nav-tree.root>.top{display:-ms-flexbox;display:flex;-ms-flex-align:center;align-items:center;cursor:pointer}.c-nav-tree.root>.top .triangle{margin-right:6px;width:0;height:0;border-top:4.5px solid transparent;border-left:7px solid #666;border-bottom:4.5px solid transparent}.c-nav-tree.root>.top .title{-ms-flex:1;flex:1;font-size:14px;color:#666;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.c-nav-tree.root>.top .action{margin-left:8px;width:20px}.c-nav-tree.root>.btm{display:none}