WPT
This page compares scores on the Web Platform Tests across web engines, using the latest master runs from wpt.fyi and Blitz's own test runner.
wpt / css / CSS2 / stacking-context
Spec: CSS ↗
Runs: Chrome 155.0.8039.0 (wpt@ffab1bde3, 2026-09-03) | Firefox 157.0a1 (wpt@ffab1bde3, 2026-09-03) | Safari 251 preview (wpt@5ce815a83, 2026-08-27) | Ladybird 1.0-a9df8 (wpt@9b4cabf6d, 2026-09-03) | Servo Servo 0.6 (wpt@7e3d005d7, 2026-09-03) | Blitz a50cb8971 (wpt@a95401e4e, 2026-09-03)
Sort areas: alphabetical | by subtest count
| Area | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| Total | 100.0%7/7 | 100.0%7/7 | 100.0%7/7 | 100.0%7/7 | 100.0%7/7 | 57.1%4/7 |
| Test | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| composite-change-after-scroll-preserves-stacking-order.html | PASS | PASS | PASS | PASS | PASS | PASS |
| opacity-affects-block-in-inline.html | PASS | PASS | PASS | PASS | PASS | PASS |
| opacity-change-parent-stacking-context.html | PASS | PASS | PASS | PASS | PASS | FAIL |
| opacity-change-twice-stacking-context.html | PASS | PASS | PASS | PASS | PASS | FAIL |
| opacity-transition-change-parent-stacking-context.html | PASS | PASS | PASS | PASS | PASS | FAIL |
| root-element-creates-stacking-context.html | PASS | PASS | PASS | PASS | PASS | PASS |
| zindex-affects-block-in-inline.html | PASS | PASS | PASS | PASS | PASS | PASS |