Currently tested:
please report any new findings, errors or improvements please, thanks!
class="testclass": IE5-5.5: red (IE5: black), IE6: blue, IE7: pink, Firefox, Opera, Safari(?), IE8: green
.testclass { color: red; /* IE 5-5.5 */ c\olor: blue; /* IE 6 */ } *+html>body .testclass { color: black; /* IE5 only if different CSS than for IE5.5. needed */ } *+html>body .testclass[class] { color: pink; /* IE 7 */ } html>body .testclass { color: green; /* Firefox, Opera, Safari, IE8 */ }