Elements on the web page can be positioned with pixel accuracy on the page. Elements on the web page can be hidden and shown interactively. Elements on the web page can be animated. The style sheet can be applied within a web page, or it can be set in an external file and linked to by all the pages in a web site. This linking is very powerful, because it enables the web designer to revise the style sheet once and see the changes take affect across the entire site.
Styles Sheets can redefine existing tags.
Style Sheets can define new tags which can be applied to any selection. Many of the styles defined in the CSS1 specification are not displayed properly inside Dreamweaver, and must be viewed in Netscape or Explorer. And of course, several of the styles display differently in Netscape and Explorer, or do not display at all in any browser. Layers are boxes that can be positioned anywhere on the page, and contain anything that can be put in a normal web page. Layers can Be positioned with pixel accuracy, in relation to the upper left hand corner of the web page, or in relation to another layer.