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Re: [csswg-drafts] [css-flexbox-1][css-position-3] static position of abspos flex children (#5843)

From: Daniel Holbert via GitHub <sysbot+gh@w3.org>
Date: Fri, 08 Jan 2021 00:59:59 +0000
To: public-css-archive@w3.org
Message-ID: <issue_comment.created-756480046-1610067598-sysbot+gh@w3.org>
Yeah, so the compat situation here (per fantasai's comment) seems to be that Firefox, Chromium, and pre-Chromium Edge all directly implement the Flexbox normative prose (determining the static position as if the abspos thing were the flex container's sole flex item).  The only deviation from that is that Chromium & EdgeHTML neglect to honor `align-content` when determining that position (which per the prose, they should honor iff the flex container is multi-line).

So browsers are mostly consistent on this right now, and have been for at least 3-4 years, which makes changes feel pretty risky from a webcompat perspective.

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