This isn't about Opera, but just backing up the "renders different != non-compliant" thought - I just fixed a rendering bug in one of my pages that only showed

This isn't about Opera, but just backing up the "renders different != non-compliant" thought - I just fixed a rendering bug in one of my pages that only showed up in Google Chrome. It turned out that Chrome was behaving correctly and that Firefox and IE were not. When I fixed the CSS rule, they were all happy. Sometimes the one who is different is the most correct. Maybe if you satisfy Opera first, you won't have as many problems with the others.