Dreamweaver

View CSS layout blocks

You can enable or disable CSS layout block visual aids as necessary.

View CSS layout block outlines

 Select View > Visual Aids > CSS Layout Outlines.

View CSS layout block backgrounds

 Select View > Visual Aids > CSS Layout Backgrounds.

View CSS layout block box models

 Select View > Visual Aids > CSS Layout Box Model.

You can also access CSS layout block visual aid options by clicking the Visual Aids button on the Document toolbar.