<div class="sqs-block gallery-block sqs-block-gallery" style="padding:0px;">
  <div class="sqs-block-content">
    <div class="sqs-gallery-container sqs-gallery-block-stacked sqs-gallery-block-show-meta block-animation-none clear">
      <div class="sqs-gallery">
        <div class="image-wrapper sqs-active-slide" data-type="image" data-animation-role="image">
          <img class="thumb-image loaded" data-src="BEFORE IMAGE URL"
            data-image="BEFORE IMAGE URL" data-load="false" data-type="image" alt="ALTERNATE TEXT"
            src="BEFORE IMAGE URL">
        </div>

        <div class="image-wrapper" data-type="image" data-animation-role="image">
          <img class="thumb-image loaded" data-src="AFTER IMAGE URL"
            data-image="AFTER IMAGE URL" data-load="false" data-type="image" alt="ALTERNATE TEXT"
            src="AFTER IMAGE URL">
        </div>
      </div>
    </div>
  </div>
</div>