<header class="spread--image" data-length="{{content['images']|length}}">

    {% for image in content['images'] %}
        <figure class="" index="{{loop.index0}}">
            <img src="{{ image['src'] }}" alt="{{image['alt']}}" />
            <figcaption>{{image['alt']}}</figcaption>
        </figure>
    {% endfor %}

</header>
