Nope, these are allowed to be used literally when writing rule definitions, see <https://drafts.csswg.org/css-syntax/#rule-defs>. -- GitHub Notification of comment by tabatkins Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/2915#issuecomment-405381125 using your GitHub accountReceived on Monday, 16 July 2018 21:02:54 UTC
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