For older browser we have to use prefixes for CSS3 support u can find all CSS3 prefixes in please click on link for more info http://css3please.com/
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How to create horizontal navigation with css sprite live example
All CDN in one website
For all CDN link we have to go for particular website you can find all popular CDN in one website this is the website where you can find all CDN in one place here is the link