Skinning standard controls
4.4.7. Standard Controls Skinning This feature is designed to unify the look and feel of standard HTML elements and RichFaces components. Skinning can be applied to all controls on a page based on element names and attribute types (where applicable). This feature also provides a set of CSS styles that let skins be applied by assigning rich-* classes to particular elements, or to a container of elements that nests controls. Standard Controls Skinning provides two levels of skinning: Basic and Extended. The level used depends on the browser type detected. If the browser type cannot be detected, Extended is used. However, if you want to explicitly specify the level to be applied, add a org.richfaces.CONTROL_SKINNING_LEVEL context parameter to your web.xml and set the value to either basic or extended.