{% if html %}
    {% if is_iframe and medium.width and medium.height %}
        <div class="embed-responsive" style="padding-top: {{ medium.height / medium.width * 100 }}%">
            {{ html }}
        </div>
    {% else %}
        {{ html }}
    {% endif %}
{% else %}
    {% image medium.filename|default:medium.preview_filename %}
{% endif %}