David Woolley wrote:

>>                                            (It is also dropped from CSS 
>>2.1.)
> 
> 
> For those unfamiliar with CSS 2.1, having a CSS 2 feature dropped simply
> means that there is not a pair of compatible implementations.  CSS 2.1
> is not a policy setting document so much as one documenting the status
> quo.
> 
> It does reflect the very low priority given to structural markup in
> commercial browsers, of course.  Failure to get two interoperable
> implementation can mean that the specification is techncally flawed,
> but quite often means that the feature is not of sufficient commercial
> priority.  The whole of XHTML 2 is probably not of great commercial
> priority, although DI could be rendered as though it were DL and 
> therefore cheaply supported.

<di> could be rendered as though it were <div> and it would be fine.
 From a CSS renderer's point of view, it's just another block box.

~fantasai

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