Background Position X and Y
Every now and then I look at using background-position-x and background-position-y but can never seem to find a definitive and up-to-date resource. To save myself the trouble in the future, I’m documenting it here. Positioning via separate X and Y values is a feature that Internet Explorer introduced but never made it into a W3C specification. Any recommendations to add it to the spec have been denied . Why have separate X and Y values? … Read the rest here