app/javascript/advertisements/@responsive_footer/template.html.mustache
<div id="cf" data-template="responsive_footer" data-theme="{{theme}}">
<a href="{{urls.campaign}}" class="cf-img-wrapper" target="_blank" rel="sponsored noopener">
<img src="{{creative.imageUrls.small}}" alt="{{creative.name}}" border="0" height="55" width="55" class="cf-img">
</a>
<a href="{{urls.campaign}}" class="cf-text" target="_blank" rel="sponsored noopener">
<strong>{{creative.headline}}</strong>
<span>{{creative.body}}</span>
<img src="{{urls.instantImpression}}" data-src="{{urls.impression}}" data-behavior="trackImpression" class="cf-impression" alt="">
</a>
<button type="button" data-behavior="close">
<span aria-hidden="true">✕</span>
</button>
</div>