Sams Teach Yourself HTML 4 in 24 Hours

Sams Teach Yourself HTML 4 in 24 Hours

By Dick Oliver

CSS1 Versus CSS2

There are actually two different languages to choose from when you make a style sheet. The one I recommend you use is called cascading style sheets, level 1 (CSS1), since it is compatible with both Netscape Navigator 4 (or later) and Microsoft Internet Explorer 4 (or later). The new CSS2 standard is only partially implemented in the current crop of browsers, and neither Netscape nor Microsoft is currently claiming that its next version will fully support CSS2. They do already support some parts of CSS2, such as the capability to precisely position text and graphics on the page (discussed under "Specifying Inline Styles" later in this hour).

You'll find a complete reference guide to both the CSS1 and CSS2 style sheet languages at http://www.w3c.org. The rest of this hour explains how to put the information from those reference documents to use in a way that is compatible with the current generation of Web browsers.

If you are a JavaScript programmer and the only browser you need to support is Netscape Navigator, you may prefer the JavaScript Style Sheets language instead. It has all the same capabilities as CSS1, but uses a slightly different syntax. See the Netscape Developer's Edge Online Web site (http://developer.netscape.com/) for a reference guide to that language.

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