CSS Library: Horizontal CSS Menus: Here
CSS Animated Underline Menu
Author: Dynamic Drive
This menu takes the simplicity and elegance of an underline beneath text and animates it for a touch of liveliness. Three effects are presented- drawing the line horizontally, drawing and thickening the line, and finally, drawing and expanding the line to cover the entire menu item.
The "underline" is created using an absolutely
positioned pseudo element positioned beneath each menu item. Whenever the user mouses over an item, CSS transition is used to animate the
the pseudo element, and in the 2nd and 3rd demos, its
property as well. The result is a clean looking yet modern horizontal menu