> > Section 9.4.1  does not say that fixed positioned elements
> establish a
> > new block formatting context.
> > Is that a miss?
> > Is it another case of "fieldset"? (not in the spec as a "nbfc"
> trigger but
> > always implemented that way).
> > Or is there another reason I'm missing?
> > I know that CSS3 spec  includes it as a flow root "trigger".
> >  http://www.w3.org/TR/CSS21/visuren.html#block-formatting
> >  http://www.w3.org/TR/css3-box/#block-level0
> It could be that 'fixed' positioning is considered as included in
> 'absolute' positioning.
> 9.6.1 states:
> "Fixed positioning is a subcategory of absolute positioning"
> Also in chapter 10 there are cases where position 'fixed' is not
> mentioned explicitly, at least in the sections titles, but included in
Thanks a lot Bruno for the pointer.
I think the answer is in this paragraph (9.6):
"References in this specification to an absolutely positioned element (or
its box) imply that the element's 'position' property has the value
'absolute' or 'fixed'."
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