This section defines the supported Cascading Style Sheets (CSS) attributes. An asterisk (*) indicates the attribute is available as of Microsoft Internet Explorer 5. Two asterisks (**) indicate the attribute is available as of Internet Explorer 5.5. A pair of plus signs (++) indicates that the attribute is available as of Internet Explorer 6. If an attribute or property has been proposed to the World Wide Web Consortium (W3C) but not yet made standard, it is marked as "proposed." If an attribute or property has not been proposed to the W3C and is not standard, it is marked as "extension."