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Ian's tests at [1] provide a better use of CSS to fake raised and depressed edges using shadows. Also, uniform edges and drop shadowed edges are in CSS3 Text. Replace existing mappings for these. [1] http://software.hixie.ch/utilities/js/live-dom-viewer/saved/2010
Fixed in https://dvcs.w3.org/hg/text-tracks/rev/15c5cb4ace8a .