Re: Proposal: will-change property (formerly will-animate)

http://dev.w3.org/csswg/css-transforms/#transform-rendering

"For elements whose layout is governed by the CSS box model, any value
other than none for the transform results in the creation of both a
stacking context and a containing block. The object acts as a containing
block for fixed positioned descendants."

- James


On Mon, Jan 20, 2014 at 11:04 AM, Pavel Curtis <pavelc@microsoft.com> wrote:

> I don't see any language in the spec that implies this behavior...
>
>         Pavel
>
> -----Original Message-----
> From: Tab Atkins Jr. [mailto:jackalmage@gmail.com]
> Sent: Friday, January 17, 2014 6:15 PM
> To: Pavel Curtis
> Cc: Robert O'Callahan; Benoit Girard; www-style
> Subject: Re: Proposal: will-change property (formerly will-animate)
>
> On Fri, Jan 17, 2014 at 5:37 PM, Pavel Curtis <pavelc@microsoft.com>
> wrote:
> > Does the declaration
> >         will-change: transform
> > also cause the element to become a containing block for fixed-positioned
> descendants?  I would hope so.
>
> Yes, since 'transform' generates a containing block for some of its
> values, it generates a containing block when specified in 'will-change'.
>
> ~TJ
>