In the PNG Drop Shadows article we explored a new CSS method that uses the PNG image format to apply drop shadows to any arbitrary box, producing excellent looking shadows. That’s great, but the method limits us to having shadows on just two sides of the content box. Clients aren’t going to be satisfied with that stricture for very long, so we need to pump up our shadows to cover all four sides of the box, just in case…
Direct link: Four Sided PNG Drop Shadows with CSS