Visual Studio 2008 introduces three new tool windows for CSS styling. They are:
All the above options are available under the View menu when you are in design view or in split view mode.
Apply Styles: Using this tool window you can create, apply and modify styles. This tool window lists all the style for a particular page. The list will include style defined inline, style in external style sheet and styles that live in current page. Applying a style to a selected control is as simple as selecting a control, then you can click on styles to be applied from the list of styles in this tool window.
Manage Styles: Using this tool window you can manage the arrangement of styles by moving them around from an external style sheet to the current page, etc.
CSS Properties: Using this tool window you can quickly find out which styles are applied to a particular control on a page. You can also figure our which style rule overrides which for a selected control. You could also use this tool to add, delete or modify CSS properties of an existing style.
SDET, Web Development Tools