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:
1093b86 wpt: skip non-UTF-8 test files instead of crashing (#659) (2026-08-09)
| Area | Interop Score | Tests | Test % | Subtests | Subtest % |
|---|---|---|---|---|---|
| Total | 95.60% | (22/23) | 95.65% | (22/23) | 95.65% |
| Test | Subtests | Subtest % | Status |
|---|---|---|---|
| adjacent-000.xht | (1/1) | 100.00% | PASS |
| adjacent-001.xht | (1/1) | 100.00% | PASS |
| adjacent-002.xht | (1/1) | 100.00% | PASS |
| attribute-000.xht | (1/1) | 100.00% | PASS |
| attribute-001.xht | (1/1) | 100.00% | PASS |
| attribute-002.xht | (1/1) | 100.00% | PASS |
| attribute-003.xht | (1/1) | 100.00% | PASS |
| attribute-004.xht | (1/1) | 100.00% | PASS |
| attribute-005.xht | (1/1) | 100.00% | PASS |
| attribute-006.xht | (1/1) | 100.00% | PASS |
| attribute-007.xht | (1/1) | 100.00% | PASS |
| class-000.xht | (1/1) | 100.00% | PASS |
| class-001.xht | (1/1) | 100.00% | PASS |
| class-002.xht | (1/1) | 100.00% | PASS |
| descendant-selector-000.xht | (1/1) | 100.00% | PASS |
| descendant-selector-001.xht | (1/1) | 100.00% | PASS |
| first-child-000.xht | (1/1) | 100.00% | PASS |
| first-child-001.xht | (1/1) | 100.00% | PASS |
| first-line-000.xht | (0/1) | 0.00% | FAIL |
| grouping-000.xht | (1/1) | 100.00% | PASS |
| grouping-001.xht | (1/1) | 100.00% | PASS |
| id-000.xht | (1/1) | 100.00% | PASS |
| id-001.xht | (1/1) | 100.00% | PASS |