Captions cut off in simple slideshow on mobile. Help!

I'm using the gallery slideshow: simple and I've set the section height to L. The captions look great in desktop but are getting cut off on mobile view. How can I edit this?

https://www.katiebottrell.com/project-work and https://www.katiebottrell.com/strategy-work

Here's the mobile preview where you can see the caption being cut off: