)
CSS Compatibility and Internet ExplorerWith each new release of Windows Internet Explorer, support for the World Wide Web Consortium (W3C) Cascading Style Sheets (CSS) standard has steadily improved. Internet Explorer 6 was the first fully CSS, Level 1-compliant version of Internet Explorer. Internet Explorer 8 is fully compliant with the CSS, Level 2 Revision 1 (CSS 2.1) specification and supports some features of CSS Level 3 (CSS3).
http://www.bestcollegesonline.com/blog/2008/07/17/50-firefox-3-add-ons-that-will-change-the-way-you-surf-the-web/
