The "CSS Mobile Profile 1.0" ( http://www.w3.org/TR/css-mobile) has been published by the W3C as a W3C Working Draft on October 13th, 2000. It "defines a subset of the Cascading Style Sheets Level 2 specification tailored to the needs and constraints of mobile devices." 
"The CSS Mobile Profile specifies a conformance profile for mobile devices, identifying a minimum set of properties, values, selectors, and cascading rules. The resulting CSS Mobile Profile is very similar to CSS1. [...] Conformance to this profile means that a user agent supports, at minimum, the features defined in this specification per the CSS2 conformance." 
Due to the fact, that this document is a working draft and the current mobile browsers don't support this profile we don't go into detail.
Copyright © 2001-2003 by Rainer Hillebrand and Thomas Wierlemann