https://developer.apple.com/library/prerelease/ios/releasenotes/General/WhatsNewInSafari/Articles/Safari_9.html#//apple_ref/doc/uid/TP40014305-CH9-SW36 (r/web_design)

In reply to a post on r/web_design:

https://developer.apple.com/library/prerelease/ios/releasenotes/General/WhatsNewInSafari/Articles/Safari_9.html#//apple_ref/doc/uid/TP40014305-CH9-SW36