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Chapter Three. The Trouble with Standards > The Curse of Legacy Rendering

The Curse of Legacy Rendering

Among Netscape 4's chief CSS failings were legacy renderings and lack of inheritance.

Designed to abstract presentation from structure, CSS makes no assumptions about how elements are supposed to be displayed or even what markup language you're going to use, although browsers and other user agents typically do make those assumptions. (Some modern browsers use CSS to enforce their assumptions and allow the designer's style sheets to override them.) By default in most browsers, without CSS, the <h1> heading would be big and bold, with vertical margins (whitespace) above and below.


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