As of Firefox 107 I intend to turn contain-intrinsic-size and longhands
on by default by default. It has been developed behind the
'layout.css.contain-intrinsic-size.enabled' preference.
More precisely, this will enable the 'contain-intrinsic-size' shorthand,
the 'contain-intrinsic-width' and 'contain-intrinsic-height' longhands,
and their logical equivalents 'contain-intrinsic-block-size' and
'contain-intrinsic-inline-size'.
Note the full grammar will be enabled, but 'auto' values only have
observable effects when paired with the 'content-visibility' property,
which is still being developed behind
'layout.css.content-visibility.enabled'.
Elevator pitch:
https://developer.mozilla.org/en-US/docs/Web/CSS/contain-intrinsic-size#description
/Platform coverage/: all.
Status in other browsers:
- Blink: shipped the shorthand in version 83
(https://chromestatus.com/feature/5737051062272000), the longhands in 95
(https://chromestatus.com/feature/5709654999957504), and 'auto' values
in 98 (https://chromestatus.com/feature/6740477866934272).
- WebKit: under development (https://github.com/WebKit/WebKit/pull/1799).
/Meta bug/: https://bugzilla.mozilla.org/show_bug.cgi?id=1597529/
/
/Bug to turn on by default/:
https://bugzilla.mozilla.org/show_bug.cgi?id=1792886
/Standard/: https://www.w3.org/TR/css-sizing-4/#intrinsic-size-override.
It's a working draft, but it has been approved by CSSWG resolution
(https://github.com/w3c/csswg-drafts/issues/4531) and passed TAG review
(https://github.com/w3ctag/design-reviews/issues/437).
/Standards Body/: W3C CSSWG.
Mozilla's standards position: positive
(https://github.com/mozilla/standards-positions/issues/512)
/web-platform-tests/:
https://wpt.fyi/results/css/css-sizing/contain-intrinsic-size
This feature wasn't previously discussed in an "Intent to prototype" thread.
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