Kentico CMS pages are rendered based on Cascading Style Sheets (CSS). By default, each web site is based on a global CSS style sheet; that can be edited using either the built in
WYSIWG editors or an external editor like
Visual Studio. The main menu is an example of how a CSS style sheet can be used to control the look and feel of the site. The main menu used in the sample corporate site is displayed using the Drop-down menu web part which is based on the CMSMenu server control. This menu depends primarily on CSS styles.