kozmo-dark/layouts/partials/menu.html

      <nav>
        <input type="checkbox" id="burger-toggle" class="burger-toggle" hidden>
        <label for="burger-toggle" class="burger-button">&#9776; {{ i18n "menu" }}</label>
        <div id="menu-entries">
          <ul class="first">
            {{- $currentPage := . }}
            {{- range .Site.Menus.main }}
            {{- if false }}
            <li>
              <a class="selected">{{ .Name }}</a>
            {{ else }}
            <li>
              <a href="{{.URL}}">{{ .Name }}</a>
            {{- end }}
            {{- if .HasChildren }}
              <ul class="second">
              {{- range .Children }}
                <li>
                  <a href="{{.URL}}">{{ .Name }}</a>
                  {{- if .HasChildren }}
                    <ul class="third">
                    {{- range .Children }}
                      <li>
                        <a href="{{.URL}}">{{ .Name }}</a></li>
                    {{- end }}
                   </ul>
                 {{- end }}
                </li>
              {{- end }}
              </ul>
            {{- end }}
            </li>
            {{- end }}
          </ul>
        </div>
      </nav>