Opera's support for CSS has been rated better than both Microsoft Explorer and Netscape Navigator in an independent study. Using a simple language, web site developers can achieve sophisticated page designs. Microsoft Explorer and Netscape Navigator have supported CSS for years, but have often diverged from the W3C Recommendation. The browsers were rated on each CSS feature, and when the numbers were totaled, Opera had the highest score.
Opera is committed to open Web standards.
We have demonstrated this commitment by carefully reviewing the W3C specifications and implementing them with the highest regard for the standards. More than any other product, Opera has shown that it is possible to create a standards-compliant Web browser which is sophisticated enough to satisfy power users, and is still simple enough for novices to use. Opera Software AS is a privately held software developer and producer, based in Oslo, Norway.