WPT
wpt / css / css-cascade / idlharness.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 1.0-4611b (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 | 34/34 | 34/34 | 34/34 | 34/34 | 22/34 | 0/34 |
| Subtest | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| idl_test setup | PASS | PASS | PASS | PASS | PASS | — |
| idl_test validation | PASS | PASS | PASS | PASS | PASS | — |
| CSSLayerBlockRule interface: existence and properties of interface object | PASS | PASS | PASS | PASS | PASS | — |
| CSSLayerBlockRule interface object length | PASS | PASS | PASS | PASS | PASS | — |
| CSSLayerBlockRule interface object name | PASS | PASS | PASS | PASS | PASS | — |
| CSSLayerBlockRule interface: existence and properties of interface prototype object | PASS | PASS | PASS | PASS | PASS | — |
| CSSLayerBlockRule interface: existence and properties of interface prototype object's "constructor" property | PASS | PASS | PASS | PASS | PASS | — |
| CSSLayerBlockRule interface: existence and properties of interface prototype object's @@unscopables property | PASS | PASS | PASS | PASS | PASS | — |
| CSSLayerBlockRule interface: attribute name | PASS | PASS | PASS | PASS | PASS | — |
| CSSLayerBlockRule must be primary interface of block | PASS | PASS | PASS | PASS | PASS | — |
| Stringification of block | PASS | PASS | PASS | PASS | PASS | — |
| CSSLayerBlockRule interface: block must inherit property "name" with the proper type | PASS | PASS | PASS | PASS | PASS | — |
| CSSLayerStatementRule interface: existence and properties of interface object | PASS | PASS | PASS | PASS | PASS | — |
| CSSLayerStatementRule interface object length | PASS | PASS | PASS | PASS | PASS | — |
| CSSLayerStatementRule interface object name | PASS | PASS | PASS | PASS | PASS | — |
| CSSLayerStatementRule interface: existence and properties of interface prototype object | PASS | PASS | PASS | PASS | PASS | — |
| CSSLayerStatementRule interface: existence and properties of interface prototype object's "constructor" property | PASS | PASS | PASS | PASS | PASS | — |
| CSSLayerStatementRule interface: existence and properties of interface prototype object's @@unscopables property | PASS | PASS | PASS | PASS | PASS | — |
| CSSLayerStatementRule interface: attribute nameList | PASS | PASS | PASS | PASS | PASS | — |
| CSSLayerStatementRule must be primary interface of statement | PASS | PASS | PASS | PASS | PASS | — |
| Stringification of statement | PASS | PASS | PASS | PASS | PASS | — |
| CSSLayerStatementRule interface: statement must inherit property "nameList" with the proper type | PASS | PASS | PASS | PASS | PASS | — |
| CSSScopeRule interface: existence and properties of interface object | PASS | PASS | PASS | PASS | FAIL | — |
| CSSScopeRule interface object length | PASS | PASS | PASS | PASS | FAIL | — |
| CSSScopeRule interface object name | PASS | PASS | PASS | PASS | FAIL | — |
| CSSScopeRule interface: existence and properties of interface prototype object | PASS | PASS | PASS | PASS | FAIL | — |
| CSSScopeRule interface: existence and properties of interface prototype object's "constructor" property | PASS | PASS | PASS | PASS | FAIL | — |
| CSSScopeRule interface: existence and properties of interface prototype object's @@unscopables property | PASS | PASS | PASS | PASS | FAIL | — |
| CSSScopeRule interface: attribute start | PASS | PASS | PASS | PASS | FAIL | — |
| CSSScopeRule interface: attribute end | PASS | PASS | PASS | PASS | FAIL | — |
| CSSScopeRule must be primary interface of scope | PASS | PASS | PASS | PASS | — | — |
| Stringification of scope | PASS | PASS | PASS | PASS | FAIL | — |
| CSSScopeRule interface: scope must inherit property "start" with the proper type | PASS | PASS | PASS | PASS | FAIL | — |
| CSSScopeRule interface: scope must inherit property "end" with the proper type | PASS | PASS | PASS | PASS | FAIL | — |
| Uncaught JS error | — | — | — | — | — | FAIL |