> you want to set the height of a div (i.e. an image) so it covers the whole landing area (what the user sees when the site loads) I believe “what the user see

> you want to set the height of a div (i.e. an image) so it covers the whole landing area (what the user sees when the site loads) I believe “what the user sees when the site loads” is often referred to as “above-the-fold”. “Landing area” may be interpreted to mean the whole landing page. Perhaps repliers were confused by the phrasing.