<div class="container-fluid">
    <div class="img-grid row">
        {% for a in activity %}
            {% if loop.index0 is divisible by(3) %}</div><div class="row">{% endif %}
            <div class="col-xs-4 social-image">
                <a href="javascript: void(0);" onclick="Mautic.showSocialMediaImageModal('{{ a.url }}');">
                    <img class="img-responsive img-thumbnail" src="{{ a.url }}" />
                </a>
            </div>
        {% endfor %}
    </div>
</div>
