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Style sheets are a very powerful tool for the Web site developer.
They give you the chance to be completely consistent with the look and feel of your pages, while giving you much more control over the layout and design than straight HTML ever did. The Styles One of the more common styles applied to HTML is the color and size of text. However, there was no way to ensure that all H4 headlines were blue except by typing in the font tag before and after each one.