WPT
wpt / css / css-shadow / shadow-cascade-order-001.html
Spec: CSS Shadow ↗
Runs: Chrome 155.0.8042.0 (wpt@55ce71bb9, 2026-09-04) | Firefox 157.0a1 (wpt@5c0dc39b9, 2026-09-04) | Safari 251 preview (wpt@0588f3896, 2026-09-04) | Ladybird 1.0-54a40 (wpt@972e0e100, 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 | 64/64 | 64/64 | 64/64 | 64/64 | 64/64 | 0/64 |
| Subtest | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| A1. document vs ::slotted, document rule should win for open mode. | PASS | PASS | PASS | PASS | PASS | — |
| A2. document vs :host, document rule should win for open mode. | PASS | PASS | PASS | PASS | PASS | — |
| A3. document vs inline, inline rule should win for open mode. | PASS | PASS | PASS | PASS | PASS | — |
| A4. ::slotted vs :host, earlier in tree-of-trees rule should win for open mode. | PASS | PASS | PASS | PASS | PASS | — |
| A5. ::slotted vs inline, inline rule should win for open mode. | PASS | PASS | PASS | PASS | PASS | — |
| A6. :host vs inline, inline rule should win for open mode. | PASS | PASS | PASS | PASS | PASS | — |
| B1. document with !important vs ::slotted, document rule should win for open mode. | PASS | PASS | PASS | PASS | PASS | — |
| B2. document with !important vs :host, document rule should win for open mode. | PASS | PASS | PASS | PASS | PASS | — |
| B3. document vs inline with !important, inline rule should win for open mode. | PASS | PASS | PASS | PASS | PASS | — |
| B4. ::slotted with !important vs :host, earlier in tree-of-trees rule should win for open mode. | PASS | PASS | PASS | PASS | PASS | — |
| B5. ::slotted vs inline with !important, inline rule should win for open mode. | PASS | PASS | PASS | PASS | PASS | — |
| B6. :host vs inline with !important, inline rule should win for open mode. | PASS | PASS | PASS | PASS | PASS | — |
| C1. document vs ::slotted with !important, ::slotted rule should win for open mode. | PASS | PASS | PASS | PASS | PASS | — |
| C2. document vs :host with !important, :host rule should win for open mode. | PASS | PASS | PASS | PASS | PASS | — |
| C3. document with !important vs inline, document rule should win for open mode. | PASS | PASS | PASS | PASS | PASS | — |
| C4. ::slotted vs :host with !important, later in tree-of-trees rule should win for open mode. | PASS | PASS | PASS | PASS | PASS | — |
| C5. ::slotted with !important vs inline, ::slotted rule should win for open mode. | PASS | PASS | PASS | PASS | PASS | — |
| C6. :host with !important vs inline, :host rule should win for open mode. | PASS | PASS | PASS | PASS | PASS | — |
| D1. document vs ::slotted both with !important, ::slotted rule should win for open mode. | PASS | PASS | PASS | PASS | PASS | — |
| D2. document vs :host both with !important, :host rule should win for open mode. | PASS | PASS | PASS | PASS | PASS | — |
| D3. document vs inline both with !important, inline rule should win for open mode. | PASS | PASS | PASS | PASS | PASS | — |
| D4. ::slotted vs :host both with !important, later in tree-of-trees rule should win for open mode. | PASS | PASS | PASS | PASS | PASS | — |
| D5. ::slotted vs inline both with !important, ::slotted rule should win for open mode. | PASS | PASS | PASS | PASS | PASS | — |
| D6. :host vs inline both with !important, :host rule should win for open mode. | PASS | PASS | PASS | PASS | PASS | — |
| E1. all style applied, inline rule should win for open mode. | PASS | PASS | PASS | PASS | PASS | — |
| E2. all styles with !important applied, rule in the last tree-of-trees should win for open mode. | PASS | PASS | PASS | PASS | PASS | — |
| A1. document vs ::slotted, document rule should win for closed mode. | PASS | PASS | PASS | PASS | PASS | — |
| A2. document vs :host, document rule should win for closed mode. | PASS | PASS | PASS | PASS | PASS | — |
| A3. document vs inline, inline rule should win for closed mode. | PASS | PASS | PASS | PASS | PASS | — |
| A4. ::slotted vs :host, earlier in tree-of-trees rule should win for closed mode. | PASS | PASS | PASS | PASS | PASS | — |
| A5. ::slotted vs inline, inline rule should win for closed mode. | PASS | PASS | PASS | PASS | PASS | — |
| A6. :host vs inline, inline rule should win for closed mode. | PASS | PASS | PASS | PASS | PASS | — |
| B1. document with !important vs ::slotted, document rule should win for closed mode. | PASS | PASS | PASS | PASS | PASS | — |
| B2. document with !important vs :host, document rule should win for closed mode. | PASS | PASS | PASS | PASS | PASS | — |
| B3. document vs inline with !important, inline rule should win for closed mode. | PASS | PASS | PASS | PASS | PASS | — |
| B4. ::slotted with !important vs :host, earlier in tree-of-trees rule should win for closed mode. | PASS | PASS | PASS | PASS | PASS | — |
| B5. ::slotted vs inline with !important, inline rule should win for closed mode. | PASS | PASS | PASS | PASS | PASS | — |
| B6. :host vs inline with !important, inline rule should win for closed mode. | PASS | PASS | PASS | PASS | PASS | — |
| C1. document vs ::slotted with !important, ::slotted rule should win for closed mode. | PASS | PASS | PASS | PASS | PASS | — |
| C2. document vs :host with !important, :host rule should win for closed mode. | PASS | PASS | PASS | PASS | PASS | — |
| C3. document with !important vs inline, document rule should win for closed mode. | PASS | PASS | PASS | PASS | PASS | — |
| C4. ::slotted vs :host with !important, later in tree-of-trees rule should win for closed mode. | PASS | PASS | PASS | PASS | PASS | — |
| C5. ::slotted with !important vs inline, ::slotted rule should win for closed mode. | PASS | PASS | PASS | PASS | PASS | — |
| C6. :host with !important vs inline, :host rule should win for closed mode. | PASS | PASS | PASS | PASS | PASS | — |
| D1. document vs ::slotted both with !important, ::slotted rule should win for closed mode. | PASS | PASS | PASS | PASS | PASS | — |
| D2. document vs :host both with !important, :host rule should win for closed mode. | PASS | PASS | PASS | PASS | PASS | — |
| D3. document vs inline both with !important, inline rule should win for closed mode. | PASS | PASS | PASS | PASS | PASS | — |
| D4. ::slotted vs :host both with !important, later in tree-of-trees rule should win for closed mode. | PASS | PASS | PASS | PASS | PASS | — |
| D5. ::slotted vs inline both with !important, ::slotted rule should win for closed mode. | PASS | PASS | PASS | PASS | PASS | — |
| D6. :host vs inline both with !important, :host rule should win for closed mode. | PASS | PASS | PASS | PASS | PASS | — |
| E1. all style applied, inline rule should win for closed mode. | PASS | PASS | PASS | PASS | PASS | — |
| E2. all styles with !important applied, rule in the last tree-of-trees should win for closed mode. | PASS | PASS | PASS | PASS | PASS | — |
| F1. document vs others, document (the first rule in tree-of-trees order) rule should win for open mode. | PASS | PASS | PASS | PASS | PASS | — |
| F2. document with !important vs others, document rule should win for open mode. | PASS | PASS | PASS | PASS | PASS | — |
| F3. document vs ::slotted with !important, important rule should win for open mode. | PASS | PASS | PASS | PASS | PASS | — |
| F4. document vs ::slotted with !important, important rule should win for open mode. | PASS | PASS | PASS | PASS | PASS | — |
| F5. document vs :host with !important, important rule should win for open mode. | PASS | PASS | PASS | PASS | PASS | — |
| F6. all rules with !important, the last rule in tree-of-trees should win for open mode. | PASS | PASS | PASS | PASS | PASS | — |
| F1. document vs others, document (the first rule in tree-of-trees order) rule should win for closed mode. | PASS | PASS | PASS | PASS | PASS | — |
| F2. document with !important vs others, document rule should win for closed mode. | PASS | PASS | PASS | PASS | PASS | — |
| F3. document vs ::slotted with !important, important rule should win for closed mode. | PASS | PASS | PASS | PASS | PASS | — |
| F4. document vs ::slotted with !important, important rule should win for closed mode. | PASS | PASS | PASS | PASS | PASS | — |
| F5. document vs :host with !important, important rule should win for closed mode. | PASS | PASS | PASS | PASS | PASS | — |
| F6. all rules with !important, the last rule in tree-of-trees should win for closed mode. | PASS | PASS | PASS | PASS | PASS | — |
| Uncaught JS error | — | — | — | — | — | FAIL |