CSS parser should be able to parse the margin-trim property and all of its values
<rdar://problem/103285644>
Pull request: https://github.com/WebKit/WebKit/pull/7626
Submitted web-platform-tests pull request: https://github.com/web-platform-tests/wpt/pull/37512
Committed 257960@main (e603e43fbb22): <https://commits.webkit.org/257960@main> Reviewed commits have been landed. Closing PR #7626 and removing active labels.
*** Bug 249204 has been marked as a duplicate of this bug. ***