<img class="slideshow__image slideshow__image--{{ block.id }} lazyload"
  src="{{ block.settings.image | img_url: '300x' }}"
  data-src="{{ img_url }}"
  data-widths="[540, 720, 900, 1080, 1296, 1512, 1728, 1944, 2048]"
  data-aspectratio="{{ block.settings.image.aspect_ratio }}"
  data-sizes="auto"
  data-parent-fit="cover"
  alt="{{ block.settings.image.alt | escape }}">