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You can choose to implement or ignore any technologies you wish. However, CSS is well-worth understanding and using. Standard HTML has very limited display and design options, and no satisfying mechanism for creating advanced layouts. Clever developers forced the table mechanism to be a crude formatting tool, but that was a hack.

CSS provides a much more powerful and flexible tool for laying out your site and specifying its visual design. With CSS, you can modify the appearance of all instances of a particular element at once. (For example, you can easily specify that all paragraph tags will be purple on a yellow background. I don't know why you'd do that.) You can also designate specific parts of your page and style them quite precisely. CSS has a number of page-layout mechanisms that allow you to create a page layout much more reliably than the old frame or table-based techniques.

If you're using XHTML strict, the tags that used to be used for layout and design (<font>, <center>, <b>, <i> and so on) are no longer supported. You're expected to use the CSS variations instead.

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15y ago

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