Unable to publish because of CSS validator issues

[marcoscaceres]

Echidna is upset :(

✗ Echidna failed to publish https://w3c.github.io/screen-orientation/W3CTRMANIFEST
 for the following reasons:

   The file has been retrieved.
   The metadata have been extracted.
   The document failed Specberus.
 👎 Unknown pseudo-element or pseudo-class “:absolute”
     ⮡ cf https://www.w3.org/pubrules/doc/rules/?profile=WD#cssValide
 👎 Unknown pseudo-element or pseudo-class “:var”
     ⮡ cf https://www.w3.org/pubrules/doc/rules/?profile=WD#cssValide
 👎 Unknown pseudo-element or pseudo-class “:var”
     ⮡ cf https://www.w3.org/pubrules/doc/rules/?profile=WD#cssValide
 👎 Unknown pseudo-element or pseudo-class “:var”
     ⮡ cf https://www.w3.org/pubrules/doc/rules/?profile=WD#cssValide

More details are available here:

 https://labs.w3.org/echidna/api/status?id=a38b65b6-b664-4b0c-9fbd-d77d6d6c2754

If you think you found a bug, please fill in and submit this issue:

 https://github.com/w3c/echidna/issues/new?title=Bug:%20%5BWHAT%5D&body=%5BEXPLANATION%5D%0A%0AFound%20while%20trying%20to%20publish%20%60https%3A%2F%2Fw3c.github.io%2Fscreen-orientation%2FW3CTRMANIFEST%60%20(see%20the%20%5Bpublication%20job%5D(https%3A%2F%2Flabs.w3.org%2Fechidna%2Fapi%2Fstatus%3Fid%3Da38b65b6-b664-4b0c-9fbd-d77d6d6c2754)).&labels=from-template

~ 4/17/2020, 1:47:39 AM

[sidvishnoi]

CSS Custom properties are not yet supported with CSS validator w3c/css-validator#173 😞
I'll send a PR to remove our use of custom properties until it is supported. Would need to incorporate it in our frozen w3c-common profile also. 😞