Re: [csswg-drafts] Stacking order + 'z-index' spec (#4965)

CSS2 seems to assume that stacking contexts can only be established by positioned elements with non-`auto` `z-index` (and the root element).

But now we have plenty of ways for that. Like the `transform` and `opacity` listed above, but also `will-change`, `contain`, `isolation`, `filter`, `perspective`, etc. The new text should not make assumptions about how the stacking context was established, since other specs can introduce new ways of establishing it.

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Received on Monday, 20 April 2020 19:56:13 UTC