weird gap bottom of page

Hi, 

I've seen other people with the same problem, but I can't seem to fix it.

My homepage is not 100vh, it has a weird gap in the bottom. I've tried the padding/margin options that squarespace 7.1 offers, but the gap does not disappear. any ideas how to fix this with custom css?

Would very much appreciate some help with this issue.

Thank you, have a wonderful day