PortableInfobox/templates/PortableInfoboxItemImage.mustache

<div class="portable-infobox-item item-type-image no-margins">
	<figure class="portable-infobox-image-wrapper">
		<a href="{{url}}" class="image image-thumbnail{{#isVideo}} video video-thumbnail small{{/isVideo}}"
		   title="{{alt}}">
			<img src="{{thumbnail}}" class="portable-infobox-image" alt="{{alt}}"
			     width="{{{width}}}"
			     height="{{{height}}}" data-{{media-type}}-key="{{name}}" data-{{media-type}}-name="{{name}}"/>
			{{#isVideo}}
			{{#duration}}
			<span class="duration" itemprop="duration">{{duration}}</span>{{/duration}}
			<span class="play-circle"></span>
			{{/isVideo}}
		</a>
		{{#caption}}<figcaption class="portable-infobox-item-margins portable-infobox-image-caption">{{{caption}}}</figcaption>{{/caption}}
	</figure>
</div>