July 2012
Intermediate to advanced
1034 pages
38h 32m
English
Content preview from Dreamweaver CS6: The Missing Manual
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Absolute Positioning
Beyond float-based layouts, CSS’s other main technique for placing elements on a page, absolute positioning, lets you specify the exact position on a page for any element. But before you start thinking you’ve found page-layout heaven, keep in mind that the Web is a fluid environment that’s difficult to control with pixel-level precision. If a visitor increases the font size in her browser, the enlarged text may spill out of your carefully crafted layout. In addition, it’s nearly impossible to force a footer to the bottom of a page laid out using absolute positioning (a trivial task with float-based layouts). That’s why most CSS Layouts use floats and the techniques discussed at the beginning of this chapter.
That’s not to say you shouldn’t use absolute positioning. It’s great for moving small elements, like a logo, image, or short set of links, to a specific position on a page. And it’s the only way to have one element overlap another (see Figure 9-19). As long as you don’t try to dictate the exact width, height, and position of every page element, you’ll find absolute positioning powerful and helpful.
Figure 9-19. One unique aspect of CSS positioning is its ability to place an element on top of other page content. That lets the drop-down menu pictured here overlap the page content below it.
The CSS Positioning Properties
Several CSS properties position elements onscreen. ...
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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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.