The sad truth about CSS3 selectors is that they really shouldn’t be used at all if you care about page performance. Decorating your markup with classes and ids and matching purely on those while avoiding all uses of sibling, descendant and child selectors will actually make a page perform significantly better in all browsers.
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Blocking JavaScript with Web Page Test - simulate eliminating JavaScript on web page lo... - 1 views
Install Page Speed - 0 views
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