Every Web page needs an underlying structure, the division of space and use of forms called architecture.
CSS has the same advantages for dividing your space as it does for controlling text: The format is separated from the content. In the future this will become more and more important as the same information is sent to a variety of devices, such as mobile phones. Web pages can detect the device and use an appropriate stylesheet.
What follows will outline several techniques for dividing your space using CSS. To view some of the possibilities of using CSS, visit the page The Greatest Vacation Ever.