PortableInfobox/templates/PortableInfoboxItemImageMobile.mustache

<div class="pi-item pi-image">
	<img src="data:image/gif;base64,R0lGODlhAQABAIABAAAAAP///yH5BAEAAAEALAAAAAABAAEAQAICTAEAOw%3D%3D"
		 data-src="{{thumbnail}}" class="pi-image-thumbnail lazy media article-media" alt="{{alt}}"
		 data-image-key="{{name}}" data-image-name="{{name}}" data-ref="{{ref}}"
		 data-params='[{"name":"{{name}}", "full":"{{url}}"}]'/>
</div>