class attribute.class attribute to a range or block of text, select the Class option and then enter a name for the style in the Name text box. NOTE: Class names must begin with a period and can contain any combination of letters and numbers (for example, .myhead1). If you don't enter a beginning period, Dreamweaver automatically enters it for you.
Id attribute, select the Advanced option and then enter one or more HTML tags in the Selector text box or select one from the pop-up menu. The selectors (known as pseudo-class selectors) available from the pop-up menu are a:active, a:hover, a:link, and a:visited.The Style Definition dialog box appears.