Conflict with WP Rocket

Hello,

For this page: nickdewaard.nl/boeken
I have a conflict between WP Rocket and your plugin. When I enable WP Rocket the styling on the page with the pop-up is not working well. But when I disable WP Rocket, the styling is working well.

Working not well: https://postimg.cc/t7KPBLTY

Working well: https://postimg.cc/7GLMy08h

Can you take a look at this?

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