<nav>

<div id="carousel">
  {% assign links = site.data.nav %}
  {% for link in links %}
  {% if page.url contains link.url %}
  {% assign class = 'active' %}
  {% endif %}
  <span class="slide">
    <a href="{{ site.url }}{{ site.baseurl }}{{ link.url }}">
      {{link.title}}</a>
  </span>
  {%endfor%}
</div>

</nav>