Vulcan/packages/telescope-embedly/lib/client/post_thumbnail.html

<template name="post_thumbnail">
  {{#if thumbnailUrl}}
    <div class="post-thumbnail" aria-hidden="true">
      <a class="post-thumbnail-link {{playVideoClass}}" href="{{postLink}}" target="_blank">
        <img class="post-thumbnail-image" src="{{thumbnailUrl}}" onerror="this.style.display='none';" aria-hidden="true"/>
      </a>
    </div>
  {{else}}
    <div class="post-thumbnail-empty"></div>
  {{/if}}
  {{#if media}}
    {{> post_video data=this}}
  {{/if}}
</template>