Set the CSS style options you want to apply:
When Creating CSS Rules Use Shorthand For lets you select which CSS style attributes Dreamweaver writes in shorthand.
When Editing CSS Rules Use Shorthand controls whether Dreamweaver rewrites existing styles in shorthand.
Select If Original Used Shorthand to make Dreamweaver leave all styles as they are.
Select According to Settings Above to make Dreamweaver rewrite styles in shorthand for the attributes selected in Use Shorthand For.
When Double-Clicking in CSS Panel lets you select the tool you prefer to use in Dreamweaver to edit CSS rules.