revert-ruleThe revert-rule CSS keyword resets a property to its previous value in the cascade, as if the current style rule had not been present. It's especially useful with conditionals, to cancel a declaration when the condition is not met.explicit-defaultsExplicit defaultsnewly2026-09-14https://drafts.csswg.org/css-cascade-5/#revert-rule-keywordhttps://developer.mozilla.org/docs/Web/CSS/Reference/Values/revert-rulecss.types.global_keywords.revert-rulehttps://nowyoucanuse.com/features--revert-rule.html