Status
This page documents the implementation status of various HTML and CSS features in Blitz.
This page documents Blitz's scores on the "css" subsuite of the Web Platform Tests.
Note: As it does not have a JavaScript engine, Blitz can only run about 20% of the total subtests. In the numbers below, tests that Blitz can't run are ignored and percentages are relative to the number of tests run.
Data from commit:
708eb61 WPT runner: support mismatch reftests and multiple rel=match links (#665) (2026-08-09)
wpt / css / css-position / overlay
| Area | Interop Score | Tests | Test % | Subtests | Subtest % |
|---|---|---|---|---|---|
| Total | 50.00% | (4/8) | 50.00% | (4/8) | 50.00% |
| Test | Subtests | Subtest % | Status |
|---|---|---|---|
| author-overlay-top-layer-removal.html | (1/1) | 100.00% | PASS |
| overlay-button-appearance.html | (1/1) | 100.00% | PASS |
| overlay-transition-backdrop-entry.html | (1/1) | 100.00% | PASS |
| overlay-transition-backdrop.html | (0/1) | 0.00% | FAIL |
| overlay-transition-dialog.html | (1/1) | 100.00% | PASS |
| overlay-transition-finished.html | (0/1) | 0.00% | FAIL |
| overlay-transition-in-rendering.html | (0/1) | 0.00% | FAIL |
| overlay-transition-out-rendering.html | (0/1) | 0.00% | FAIL |