HubSpot simple menu example

simple-menu.twig

{% set node = menu(module.menu_field) %}
<ul>
  {% for child in node.children %}
  <li class="{{ 'has-children' if child.children }} menu-main-item-{{child.level}}">
    <a href="{{child.url}}" target="{{ child.linkTarget }}">{{ child.label }}</a>
    {% if child.children %}
    <ul style="background: yellow">
      {% for child2 in child.children %}
      <li class="menu-child-depth-{{child2.level}}">
        <a href="{{ child2.url }}" target="{{ child.linkTarget }}">{{ child2.label }}</a>
      </li>      
      {% endfor %}
    </ul>
    {% endif %}
  </li>
  {% endfor %}
</ul>