Cascading Style Sheets

You can move styles from an internal style sheet to an external style sheet.
You manipulate the styles using the CSS Styles panel located on the right portion of the screen.
You may edit the properties given to a particular style in the properties below the listed rules.
You can use CSS to manipulate many individual portions of your code on your site.
When working with multiple pages destined to look similar, use an external style sheet to handle the common rules.
A page can have more than one style sheet attached/linked to it.
Style sheets make pages look a lot more pleasing to the eye and reduces your coding considerably.
It's a good idea, when working with Dreamweaver, to save your CSS file to the same directory as your other assets.
Remember that while a style sheet may define specific properties to given XHTML tags, you can override them with a style sheet on a tag-to-tag basis.
When using an external style sheet, Dreamweaver will make any changes across all pages the style sheet is linked to with a simple change.

Cascading Style Sheets are used to change the appearance of elements in a web page and/or website. It can be used to define a style for an entire site, or a single page, or to override a defined rule. The use of Cascading Style Sheets makes web design simpler, cleaner, and better to look at.