Animatable pseudo-elements, seamless iframe fixes and Happy 2013!

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Happy New Year! This update briefly talks about the 613 changes which landed in Chromium and WebKit last week, as many people were still on holiday.

After refactoring work for moving the ::before and ::after pseudo-elements in to the DOM, Eliott enabled support for CSS animations and transitions on these pseudo-elements. When using a keyword as the timing function for a transition WebKit will no longer return a cubic bezier and re-layouts for Flexible Box elements when using overflow, paddings and absolute positioning has been fixed.

Mike made sure that bodies of seamless iframes default to having no margin and that seamless iframes with content specified through the @srcdoc attribute will now inherit styles. Furthermore, the prefixed webkitPostMessage has been removed from all WebKit ports in favor of the unprefixed version.

Other notable changes include:

Surely there’ll be more interesting updates next week again :--).

5 Responses to “Animatable pseudo-elements, seamless iframe fixes and Happy 2013!”

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January 8, 2013 at 7:16 pm

Win 64 optimized chrome would be soo cool 😀


January 8, 2013 at 7:58 pm

Wow, seamless iframes are groovy–I’d heard they were being spec’d but didn’t know they’re actually available in Chromium in some form. (Styles seem to inherit, at least.)


January 24, 2013 at 9:48 pm

Peter, thank you for all your work. As a web developer, I am following you and Paul Irish for some time. And all the good stuff you guys get into devtools is just amazing and well appreciated. Love reading about pseudo adding to the dom, debugging those items always been painful. Regards


February 5, 2013 at 1:21 pm

Would love to see an update to your site – hope things are going OK. I love to see how Chrome is becoming an ever richer platform for content and your updates are the best place to get that info (except trawling through the changelogs!).