Intent to Implement and Ship: CSS inset/inset-block/inset-inline shorthands

[Mats Palmgren]

Summary:
The inset-block CSS property is a shorthand for the inset-block-start/end
properties (ditto -inline).
The 'inset' CSS property is a shorthand for the top, right, bottom, and
left properties.

Bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1520229

Link to standard:
https://drafts.csswg.org/css-logical/#propdef-inset-inline
https://drafts.csswg.org/css-logical/#propdef-inset

Platform coverage: All platforms

Estimated or target release: Firefox 66

Preference behind which this will be implemented: None

Is this feature enabled by default in sandboxed iframes? Yes

DevTools bug: N/A, devtools support is included in the patch

Do other browser engines implement this?
https://wpt.fyi/results/css/css-logical/logical-box-inset.html

web-platform-tests:
http://w3c-test.org/css/css-logical/logical-box-inset.html

Is this feature restricted to secure contexts? No


/Mats

[Mats Palmgren]