left.This value creates a new stacking context when the value of
filterproperty set to something other than
none(see the CSS Transforms Spec), in which case that ancestor behaves as the containing block. (Note that there are browser inconsistencies with
filtercontributing to containing block formation.) Its final position is determined by the values of
left.This value always creates a new stacking context. In printed documents, the element is placed in the same position on every page.
left. The offset does not affect the position of any other elements.This value always creates a new stacking context. Note that a sticky element “sticks” to its nearest ancestor that has a “scrolling mechanism” (created when
overlay), even if that ancestor isn’t the nearest actually scrolling ancestor.