{% if gallery_images %}
  <div class="product-photo-gallery">
    {% for img in gallery_images %}
      <a href="{{ img }}" data-fancybox="product-gallery">
        <img src="{{ img }}" loading="lazy" style="width:150px; margin:5px; border:1px solid #ccc;" />
      </a>
    {% endfor %}
  </div>
{% endif %}