The forums ran from 2008-2020 and are now closed and viewable here as an archive.
Home › Forums › CSS › Gap between Nav bar and top of page › Re: Gap between Nav bar and top of page
Or you could use ‘normalise’
To put your html & CSS in codepen, go to codepen.io and put your HTML& CSS in the appropriate boxes.
Don’t bother with the body background image though.