gaps between the faq blocks

hey!

I wanted to ask you if you could be so kind and help me with the gap between each single faq block, you can see what I mean on the following screenshots ??
screenshot1
screenshot2
the gap is really big and I want to make it smaller (so it’s about 15px or something like that). I tried to fix it with some custom css but unfortunately there are strange input fields (which aren’t displayed but are there, see screenshot3) – each with a different ID – so I can’t just simple write some css to get them hidden, because everytime my customer makes a new faq block, there is this gap again (and he is not able to fix this issue). so I’m quite desperate how to fix this globally…
screenshot3

thanks for helping! ??

greetings
Diana