Point the viewer container at element. When element is anything other than document.body, promote it to a containing block so fixed/absolute viewer overlays scope to it. Idempotent for repeat calls with the same element.
element
document.body
Point the viewer container at
element. Whenelementis anything other thandocument.body, promote it to a containing block so fixed/absolute viewer overlays scope to it. Idempotent for repeat calls with the same element.