@w3cdevs When do you think you can update the CSS validator so that it doesn't point out custom properties as errors? while we're at it, why are data-attributes classified as something bad?
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sorry there is no clear answer on "when" as of today - as you may have seen, this has been discussed on github as part of github.com/w3c/css-validator… but the right solution has not been identified yet; likely a first step will be to ignore them rather than mark them as errors…
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Replying to @w3cdevs @G3Kdigital
A new version of the CSS validator has been deployed that should no longer report errors on custom properties - thanks for the ping!

Sep 17, 2020 · 5:33 PM UTC

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Replying to @w3cdevs
THANX TO YOU!! Awesome!!