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CSS3
Most modern browsers support CSS2, which de?¬? ned a slew of new features
that were added to the initial CSS recommendations in the mid-nineties.
CSS3 is the latest upgrade to CSS. Actually, it??™s been around since about 2000,
and the speci?¬? cation was re?¬? ned over the next ?¬? ve years, but browser developers
have been very slow in adopting CSS3.
The objective of CSS3 is to move yet more presentational control of documents
to CSS and further emulate the sophisticated controls that are
available to our print design colleagues through programs such as Adobe
InDesign and QuarkXPress.
The CSS3 spec is so extensive that it has been divided into several modules,
which include a Color Module, Backgrounds and Borders, and Multi-Column
Layout. You can go to http://www.css3.info to learn all about the various
CSS3 modules.
What I will say is that when I wrote the original version of Stylin??™ some three
years ago, the CSS3 speci?¬? cation was pretty much where it is today, and
the fact remains that in virtually all browsers, it is very poorly supported.
Attribute selectors are the only part of it that has really made inroads, and
although useful, they represent a small part of the entire speci?¬? cation.
Is CSS3 so incredibly dif?¬? cult to implement? Even though it seems that the
whole notion of Web 2.0 is visually encapsulated by boxes with rounded
corners, rounded corners on XHTML elements are a part of the CSS3 speci-
?¬? cation that only Mozilla can render using its special ???-moz??? selectors.
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