Andrew and Brian, you can also try.
body.page-id-XXX .fl-page-footer {
display:none;
}
for the footer
Andrew look at above note and try that setup to remove your header
Dennis
Thank you, works perfect perfect perfect!
Thanks so much for assisting, Dennis!
My pleasure 
First, post of a new user here.
I’m switching to BB from Divi (wish I’d found BB sooner!).
In Divi, they have a page template that is a ‘blank’ page with no header or footer. I would have thought that would be a better way of dealing with this rather than using CSS as it can be set at the page level and with no code.
Next up - wondering if someone with better PHP skills than me could create that?
Cool. That worked for me! As a side note, there is also a really cool free plugin called, “CSS Plus” by Paulo E. Calixto, that allows you to put CSS on individual pages, right in the page editor (not the BB page editor!), just the built-in WP editor.