Style sheets can make an author's life much easier.
With style sheets, one only needs to specify presentational preferences once, and the style can be applied to an entire site. Not only that, but style sheets also reduce download time when one file contains all the style information. Available info on the subject of Cascading Style Sheets is too extensive to be written in a posted document like this. It is suggested that you research your technical questions on the use of CSS in one of the following places on the World Wide Web. Todd also designed a CSS interface for IE 4.01 for Mac.