Support does not mean that everybody gets the same thing.
Archive for Browsers Topic
Since the CSS specification itself is inadequate to handle the complexities and specific requirements of styling images, SVG includes a number of style extensions.
Since microformats typically don’t try to solve specific cases for niche fields, RDFa picks up where microformats leave off by adding an open-ended mechanism for extending the semantics of markup without limitations from the host markup language itself.
Although fluid design was a more popular design solution in the early days of the Internet, it’s less popular now as a layout technique for many small and medium-size businesses, artist portfolio sites, and blogs.
The web-safe colors were chosen mathematically, not because they are necessarily the colors you would elect to use most often.
Different systems can’t be counted on to display a color all in the same way.
The following excerpt from Section 508 lists the standards from the HTML part (Web-based intranet and Internet information and applications) and is interspersed with notes on how you might meet each standard.