Andrey Petrov 16 December 2009 Great article and good somewhat useful examples! Just one note: as many mentioned already you have missed Firefox 3.7 which started supporting transitions. Since this is experimental stuff it would be better to include as many browsers as possible to experiment. So browser developers can use your examples as additional test cases and in a couple months or so your examples will work in more browsers (Firefox 3.7, Opera 10 Mobile and Opera 11). Here is CSS specs that supported by Opera: http://www.opera.com/docs/specs/presto23/#css They use o prefix. BTW, I also recently went nuts with CSS3 transformations :-) Comments are welcome.