Помогите выбрать селектор для jquery fancybox

На моей странице открывается галерея Fancybox. Во время открытия мне нужно применить css стили к самому изображению, но никак не могу найти сам плагин в dom - пробовал разные селекторы, не получается. Пожалуйста, направьте в нужном направлении!

Вот пример https://codepen.io/fancyapps/pen/wEVOPa

<p>
  Groups are created by adding the same <code>data-fancybox</code> attribute value
</p>

<hr class="my-5" />

<p class="imglist" style="max-width: 1000px;">
  <a href="https://source.unsplash.com/juHayWuaaoQ/1500x1000" data-fancybox="images" data-caption="Backpackers following a dirt trail">
    <img src="https://source.unsplash.com/juHayWuaaoQ/240x160" />
  </a>

  <a href="https://source.unsplash.com/eWFdaPRFjwE/1500x1000" data-fancybox="images" data-caption="Mallorca, Llubí, Spain">
    <img src="https://source.unsplash.com/eWFdaPRFjwE/240x160" />
  </a>

  <a href="https://source.unsplash.com/c1JxO-uAZd0/1500x1000" data-fancybox="images" data-caption="Danish summer">
    <img src="https://source.unsplash.com/c1JxO-uAZd0/240x160" />
  </a>

  <a href="https://source.unsplash.com/eXHeq48Z-Q4/1500x1000" data-fancybox="images" data-caption="Sunrise above a sandy beach">
    <img src="https://source.unsplash.com/eXHeq48Z-Q4/240x160" />
  </a>

  <a href="https://source.unsplash.com/RFgO9B_OR4g/1500x1000" data-fancybox="images" data-caption="Woman on a slope by the shore">
    <img src="https://source.unsplash.com/RFgO9B_OR4g/240x160" />
  </a>

  <a href="https://source.unsplash.com/7bwQXzbF6KE/1500x1000" data-fancybox="images" data-caption="Mountain hiking sunset">
    <img src="https://source.unsplash.com/7bwQXzbF6KE/240x160" />
  </a>

  <a href="https://source.unsplash.com/NhU0nUR7920/1500x1000" data-fancybox="images" data-caption="Sunset Picnic">
    <img src="https://source.unsplash.com/NhU0nUR7920/240x160" />
  </a>

  <a href="https://source.unsplash.com/B2LYYV9-y0s/1500x1000" data-fancybox="images" data-caption="On them Indiana Nights">
    <img src="https://source.unsplash.com/B2LYYV9-y0s/240x160" />
  </a>
</p>```