Dreamweaver CS 5.5 provides a more intuitive interface to enter information for the following commonly used CSS3 properties.
A new “+” button has been introduced for the above properties. When you click the button, a dialog appears using which you can enter values for various parameters of the property.
Dreamweaver also supports browser (webkit, mozilla) specific implementation of box-shadow, border-radius, and border-image properties.
Note: Changes made to CSS properties are not displayed in the design view. Switch to Live view to preview changes after you edit properties in the code view or in the CSS panel.