WPT
wpt / css / css-cascade / revert-rule-shadow.html
Spec: CSS Cascading ↗
Runs: Chrome 155.0.8043.0 (wpt@b89af32bc, 2026-09-05) | Firefox 157.0a1 (wpt@b89af32bc, 2026-09-05) | Safari 251 preview (wpt@b89af32bc, 2026-09-05) | Ladybird 1.0-f994f (wpt@b89af32bc, 2026-09-05) | Servo Servo 0.6 (wpt@2c385f65e, 2026-09-04) | Blitz a50cb8971 (wpt@a95401e4e, 2026-09-03)
View on the Blitz WPT dashboard | Open test on wpt.live | wpt.fyi
| Chrome | Firefox | Safari | Ladybird | Servo | Blitz | |
|---|---|---|---|---|---|---|
| Total | 12/12 | 12/12 | 12/12 | 6/12 | 12/12 | 0/12 |
| Subtest | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| revert-rule in document rule falls back to :host rule | PASS | PASS | PASS | FAIL | PASS | — |
| revert-rule in document rule falls back to ::slotted rule | PASS | PASS | PASS | FAIL | PASS | — |
| revert-rule in :host rule has no effect when a document rule already wins | PASS | PASS | PASS | PASS | PASS | — |
| revert-rule with no shadow fallback falls through to unset (inherited) | PASS | PASS | PASS | FAIL | PASS | — |
| revert-rule in document rule falls back to the winning :host rule | PASS | PASS | PASS | FAIL | PASS | — |
| revert-rule chain across document rule and :host rule | PASS | PASS | PASS | FAIL | PASS | — |
| revert-rule in ::part() rule falls back to earlier ::part() rule | PASS | PASS | PASS | PASS | PASS | — |
| revert-rule in ::part() rule falls back to shadow-internal rule | PASS | PASS | PASS | PASS | PASS | — |
| revert-rule in shadow-internal rule has no effect when ::part() rule wins | PASS | PASS | PASS | PASS | PASS | — |
| revert-rule in third ::part() rule falls back to second ::part() rule | PASS | PASS | PASS | PASS | PASS | — |
| revert-rule on host and ::part() rule on part are independent | PASS | PASS | PASS | FAIL | PASS | — |
| revert-rule in higher-specificity ::part() rule falls back to lower-specificity ::part() rule | PASS | PASS | PASS | PASS | PASS | — |
| Uncaught JS error | — | — | — | — | — | FAIL |