The W3C made important strides in content accessibility when it added characteristics to CSS2 that support aural style sheets. Developers often forget that some Web users might be partially sighted or blind and that these users need special types of browsers to help them find and consume information. The aural style sheet model was developed for this class of user.
With aural style sheets, you are able to apply style characteristics to browsers that use speech synthesis to read the information on a Web page to the user. The CSS2 standard provides for the speech characteristics shown in Table 9.3.