v148 · CSS · cascade layers

Layer Reset Demo

Place revert-rule in a layered design system and see the exact fallback target: an earlier matching rule in the same layer when one exists, or a lower-priority layer when the current rule is the only rule in its layer.

Checking revert-rule support…

Override rule background uses revert-rule color uses revert-rule border-radius uses revert-rule

Current rule position

Fallback behavior

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Shipping card

Marketing wants this card polished, but the product team needs a way to undo selected declarations without losing the rest of the cascade.

rule stack

references

ChromeStatus entry
CSS Cascade Level 5 — revert-rule
Cascade Debugger
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implementation reference

Need the exact API surface, compatibility boundaries, errors, lifecycle, and source links? Read the matching gendn reference ↗