- From: Tab Atkins Jr. <jackalmage@gmail.com>
- Date: Tue, 5 May 2015 16:15:26 -0700
- To: Christian Biesinger <cbiesinger@google.com>
- Cc: www-style list <www-style@w3.org>
On Wed, Apr 8, 2015 at 6:25 PM, Christian Biesinger <cbiesinger@google.com> wrote: > More questions on http://dev.w3.org/csswg/css-flexbox/#abspos-items - > > So the spec says: > "In other words, the static position of an absolutely positioned child > of a flex container is determined after flex layout by setting the > child’s static-position rectangle to the flex container’s content box, > then aligning the absolutely positioned child within this rectangle > according to the justify-content value of the flex container and the > align-self value of the child itself" > > I'm not completely sure how to interpret that especially in the case > of auto margins. For example, given align-self: flex-end but margin: > auto 0. Am I supposed to take a similar approach to the flex algorithm > and ignore the flex-end here (because the margins centered it)...? Or > should I ignore the margins and align it to flex-end because that > matches this text more closely, even though it seems to contradict the > previous paragraph a bit (which implies that only the static position > is affected). I've removed that paragraph. It's just trying to rephrase the previous paragraph, but it's doing so badly. The previous paragraph gives the correct behavior - treat it like it's a lone flex item and do normal flex alignment (with all sizes fixed, so only alignment occurs). This really just means that, depending on margins and alignment properties, it'll be start/center/end in each axis of the flexbox's content box, but the more general text is easier to define and handles any future values we add to the alignment properties correctly. > In fact, a strict reading of the quoted paragraph implies that > align-self/justify-content override other alignment methods (e.g. > top:0 bottom:0)... No it doesn't; this is defining the static position. The static position doesn't take top/etc into account, and isn't used when top/etc are non-auto. ~TJ
Received on Tuesday, 5 May 2015 23:16:14 UTC