Re: [css3-transitions] Transitions from display:none

On 12/13/11 2:15 PM, Tab Atkins Jr. wrote:
> There is no ordering for properties to apply; they all apply at the
> same time.  Any behavior otherwise is a bug.

There is also no definition of when a value is computed, which is the 
problem: transitions allow one to see when values are computed in ways 
that could not be determined before with black-box testing.

So either we have to make various transition start stuff explicitly 
undefined, or we have to invalidate a whole class of optimizations that 
avoid computing unused values.

-Boris