**Placed in templates/includes/tabs.html**

<ul class="tab-menu">
    <li class="{% if active_tab == 'tab1' %} active{% endif %}"><a href="#">Tab 1</a></li>
    <li class="{% if active_tab == 'tab2' %} active{% endif %}"><a href="#">Tab 2</a></li>
    <li class="{% if active_tab == 'tab3' %} active{% endif %}"><a href="#">Tab 3</a></li>
</ul>



**Placed in your page template**

{% include "includes/tabs.html" with active_tab='tab1' %}