Putting space between header menu and adsense banner

https://barterbus.com

I want to put some space between my header menu and my adsense banner.
I have tried using padding (which works) except the code then appears on my actual webpage.

Any assistance will be appreciated.

Paul

**incidentally, my other site https://joaniebaby.com
the same process works, and the code doesn’t display on the page. Hmm.