1.5 Summary

With CSS, it is possible to completely change the way elements are presented by a user agent. This can be done at a basic level with the display The real importance of external style sheets is the way in which they allow authors to put all of a site's presentation information in one place, and point all of the documents to that place. This not only makes site updates and maintenance a breeze, but it helps to save bandwidth since all of the presentation is removed from documents.

firm grasp of the way CSS selects pieces of a document for styling, which is the subject of the next chapter.