(In CSS <= 2) None. Unfortunately, there are no selectors (in CSS <= 2) that work depending on the position (in terms of the number that it is inside of its parent children), which, I believe, you will need to do this only with CSS.
Note to yourself: read on CSS3 already!
icio May 04 '10 at 13:15 2010-05-04 13:15
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