Clearing problem with Footer/Main

I feel like I have run into this before but I have tried all the usual clear tricks, including one I learned on this forum.

For some reason when I add a form, the div refusing to acknowledge it.

Ahhh!

https://bosworthandco.com/curtisbrowncreative/how-to-apply/

Help! I feel like I am missing something incredibly obvious but can’t quite see it….

Thanks a million…