March 2004
Intermediate to advanced
528 pages
16h 33m
English
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Chapter 7. Basic Visual Formatting
In the previous chapters, we covered a great deal of practical information on how CSS handles text and fonts in a document. In this chapter, we look at the theoretical side of visual rendering, answering many of the questions we skipped over earlier in the interest of addressing how CSS is implemented.
Why is it necessary to spend an entire chapter on the theoretical underpinnings of visual rendering in CSS? The answer is that with a model as open and powerful as that contained within CSS, no book could hope to cover every possible way of combining properties and effects. You will obviously go on to discover new ways of using CSS for your own document effects.
In the course of exploring CSS, you may encounter seemingly strange behaviors in user agents. With a thorough grasp of how the visual rendering model works in CSS, you’ll be able to determine whether a behavior is a correct (if unexpected) consequence of the rendering engine CSS defines or whether you’ve stumbled across a bug that needs to be reported.
Basic Boxes
CSS assumes that every element generates one or more rectangular boxes, called element boxes. (Future versions of the specification may allow for nonrectangular boxes, but for now everything is rectangular.) Each element box has a content area at its core. The content area is surrounded by optional amounts of padding, borders, and margins. These items are considered optional because they could all be set to a width of zero, effectively ...
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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.