WPT
wpt / web-animations / animation-model / keyframe-effects / effect-value-context-filling.html
Spec: Web Animations ↗
Runs: Chrome 155.0.8042.0 (wpt@4eb09bcd9, 2026-09-04) | Firefox 157.0a1 (wpt@c3fcbf4ba, 2026-09-04) | Safari 251 preview (wpt@e7122b73f, 2026-09-04) | Ladybird 1.0-52f0f (wpt@a1ecd0c09, 2026-09-04) | 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 | 14/14 | 14/14 | 14/14 | 13/14 | 0/14 | NOT RUN |
| Subtest | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| Filling effect values reflect changes to font-size on element | PASS | PASS | PASS | PASS | FAIL | — |
| Filling effect values reflect changes to font-size on parent element | PASS | PASS | PASS | PASS | FAIL | — |
| Filling effect values reflect changes to variables on element | PASS | PASS | PASS | PASS | FAIL | — |
| Filling effect values reflect changes to variables on parent element | PASS | PASS | PASS | PASS | FAIL | — |
| Filling effect values reflect changes to the animation's keyframes | PASS | PASS | PASS | PASS | FAIL | — |
| Filling effect values reflect changes to the animation's composite mode | PASS | PASS | PASS | PASS | FAIL | — |
| Filling effect values reflect changes to the animation's iteration composite mode | PASS | PASS | PASS | FAIL | FAIL | — |
| Filling effect values reflect changes to the base value when using additive animation | PASS | PASS | PASS | PASS | FAIL | — |
| Filling effect values reflect changes to the base value when using additive animation on a single keyframe | PASS | PASS | PASS | PASS | FAIL | — |
| Filling effect values reflect changes to the base value when using the fill value is an implicit keyframe | PASS | PASS | PASS | PASS | FAIL | — |
| Filling effect values reflect changes to the base value via a parent element | PASS | PASS | PASS | PASS | FAIL | — |
| Filling effect values reflect changes to underlying animations | PASS | PASS | PASS | PASS | FAIL | — |
| Filling effect values reflect changes to underlying animations via a a parent element | PASS | PASS | PASS | PASS | FAIL | — |
| Filling effect values reflect changes to underlying animations made by directly changing the keyframes | PASS | PASS | PASS | PASS | FAIL | — |