There are often cases where similar (but not exactly the same) CSS styles are defined. Avoid the redundancy by grouping the common styles and creating a second style for the difference. For example, here are two classes that define a menu item when it...

There are often cases where the same CSS style is defined multiple times for different classes. Consider grouping selectors to avoid the redundancy. This also helps optimize the size (and improve manageability) of the CSS. (In fact, CSS optimizers use...