CSS isn't able to transform text into sentence case at this time.
If you think about it, it is quite a difficult thing to do. It means that CSS would have to be able to understand all of the many grammatical rules of sentence structure - if the only place a letter is supposed to be capitalized was after a period then it would be pretty simple. But that isn't the case
OK, I suppose lots of great minds have thought about it...but to my mind sentence case just means simply start a sentence with a capital letter after a full stop...anyway how has Microsoft invoked it in MS Word 2003?
If I have the following in Word 2003:
the cat. the dog. the queen.
then Sentence Case changes it to:
The cat. The dog. The queen.
What else is sentence case apart from that...I may be missing something...