CSS

XHTML is concerned only with structural issues, while CSS is concerned with display issues.
CSS gives the designer more expressive power
- Set color of text and background.
- Create borders around any element.
- Change space around any element.
- Change how text is capitalized and decorated.
- Change text spacing
Style sheets are associated with an XHTML (or XML) page. So changes in style are easy and a style can be used for many pages.
CSS often results in smaller total file sizes.
One CSS file for entire website.