Fancybox responsive resize

Hi,

I’m testing your plugin with Slider Revolution.
If you go with a smartphone (I use iPhone 5s for testing) to https://studiotopo.com/mnec/il-mondo-dei-morti/ and click on the circle cross icon on the plan/map, you see that inside the fancybox loads a post content.

If you zoom in (with fingers) the plan/map centering to the same icon and click on, the fancybox goes on the right side. Please see the screenshot https://studiotopo.com/5s.png

It is possible to keep the fancybox centered?

Thanks

The page I need help with: [log in to see the link]