.tree-menu {
  display: block; }
  .tree-menu ul.children, .tree-menu ul.items {
    margin-left: 10px; }
  .tree-menu ul li.menu.closed ul {
    display: none; }
  .tree-menu ul li.menu.open ul {
    display: block; }
  .tree-menu ul li.menu.active ul {
    display: block; }
    .tree-menu ul li.menu.active ul li.menu a {
      color: white; }
}