Remove Space at top of site

Hi,

I hope you are doing well. I’m having trouble removing the white space at the top of my site (above my header image).

Here is the site: https://40dayprogram.com/

I’ve tried just about all the code alterations (using my css editor plugin) that I have found on this forum.

I’m using the Twenty Twelve theme.

If you have any suggestions, I would be so grateful for your help.

Thank you!
Brittany