CSS drop-shadows without images

Drop-shadows are easy enough to create using pseudo-elements. It’s a nice and robust way to progressively enhance a design. This post is a summary of the technique and some of the possible appearances.
Demo: CSS drop-shadows without images
Known browser support: Firefox 3.5+, Chrome 5+, Safari 5+, Opera 10.6+

http://nicolasgallagher.com/css-drop-shadows-without-images/