Multiple columns in parallax

Hi,

I'm trying to create a parallax section that contains a long list of names (about 60). I would like to spread them across 4 columns when space allows and have these columns on top of each other if the window is too narrow (e.g. on mobile site).
My problem is that on certain windows sizes (I was able to reproduce both on safari and chrome), the text of the parallax section gets cut either at the top or the bottom or both. Is there a way to make sure that the text in a parallax section will not be cut?
Here is the problem in question:
http://learningtheory.org/colt2018/index.html#pc

Thanks!