May 2000
Intermediate to advanced
472 pages
14h 17m
English
Content preview from Cascading Style Sheets: The Definitive GuideBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Structure
As I’ve mentioned before, CSS is powerful because of the way in which it uses the structure of HTML documents to determine which styles should be applied in what ways. That’s really only a part of the story, though, since it implies that the only way CSS uses document structure is to determine which rules apply to which elements.
The truth is that structure plays a much bigger role in the way styles are applied to a document. In order to understand this role, we need to understand how documents are structured. Take the “tree” view in Figure 2-18 of the simple HTML document listed here:
<HTML> <HEAD> <BASE HREF="http://www.meerkat.web/"> <TITLE>Meerkat Central</TITLE> </HEAD> <BODY> <H1>Meerkat <EM>Central</EM></H1> <P> Welcome to Meerkat <EM>Central</EM>, the <STRONG>best meerkat web site on <A HREF="inet.html">the <EM>entire</EM> Internet</A></STRONG>!</P> <UL> <LI>We offer: <UL> <LI><STRONG>Detailed information</STRONG> on how to adopt a meerkat</LI> <LI>Tips for living with a meerkat</LI> <LI><EM>Fun</EM> things to do with a meerkat, including: <UL> <LI>Playing fetch</LI> <LI>Digging for food</LI> <LI>Hide and seek</LI> </UL> </LI> </UL> <LI>...and so much more!</LI> </UL> <P> Questions? <A HREF="mail to:suricate@meerkat.web">Contact us!</A> </P> </BODY> </HTML>
Much of the power of CSS is based on the parent-child
relationship of elements. HTML documents, and indeed most structured documents of any kind, are based on a hierarchy of elements, which is visible in the ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.