Structuring Your Pages
The whole point of using CSS is to separate the formatting and styling rules from the content of your page. This frees your page from rigid appearance directives and gives it the flexibility to work well in different browsers, platforms, media, and even print. Perhaps the most important aspect of a page to be styled with CSS is its structure. A reasonable, logical structure can be easily adapted for more than one kind of output device.
To structure your page:
Figure 11.3. Here's what our example looks like with no styles at all. Thanks to its decent structure, it is perfectly intelligible, if a bit spartan.