Automatic update from web-platform-tests
[css-multicol] property parsing, computed values (#14259)
Test that CSS Multi-column Layout properties parse exactly the grammar
specified in the spec.
https://drafts.csswg.org/css-multicol/
Test that computed values are as specified, with lengths made absolute.
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wpt-commits: fa234f78976ca7abea803fceb3eb53ad3a8603d2
wpt-pr: 14259
