The Style Rendering toolbar (hidden by default) contains buttons that let you see how your design would look in different media types if you use media-dependent style sheets. It also contains a button that lets you enable or disable CSS styles. To display the toolbar, select View > Toolbars > Style Rendering.

toolbar only works if your

By default, Dreamweaver displays your design for the screen media type (which shows you how a page is rendered on a computer screen). You can view the following media type renderings by clicking the respective buttons in the Style Rendering toolbar