Why does the first photo in Fancybox 3 go off the page when I open it?

Question

fancyBox

Hello,
I use fancybox 3
When I open the first photo goes beyond the page borders
https://c2n.me/3SotYb3
If I change the window size or go to the next photo, everything is displayed as it should.
Tell me, please, what could be the reason?
Example weeklyshoes.by/mujchinam/nike-roshe-21.html

Answer 1

.fancybox-image {
  width: initial;
  height: initial;
}