
As it happens, the positioning of backgrounds does contradict something I said earlier. background-position is the only background property with restrictions, as it may only be applied to block-level and replaced elements; background image positioning cannot be done on inline elements such as hyperlinks.
margin + 0padding =85px . Thus the top inner edge of the floatedelement should be at pixel position 85; even though this is higherthan the top inner edge of the float's parent element, the mathworks out such that the specification isn't violated. A similarline of reasoning explains how the left inner edge of the floatedelement can be placed to the left of the left inner edge of itsparent.