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)
wpt / css / css-rhythm
| Area | Interop Score | Tests | Test % | Subtests | Subtest % |
|---|---|---|---|---|---|
| Total | 19.60% | (3/20) | 15.00% | (16/46) | 34.78% |
| computedstyle | 46.40% | (0/2) | 0.00% | (13/28) | 46.43% |
| replaced-elements | 0.00% | (0/7) | 0.00% | (0/7) | 0.00% |
| Test | Subtests | Subtest % | Status |
|---|---|---|---|
| block-step-size-establishes-block-formatting-context-list-item.html | (0/1) | 0.00% | FAIL |
| block-step-size-establishes-block-formatting-context.html | (0/1) | 0.00% | FAIL |
| block-step-size-establishes-independent-formatting-context-list-item.html | (0/1) | 0.00% | FAIL |
| block-step-size-establishes-independent-formatting-context.html | (0/1) | 0.00% | FAIL |
| block-step-size-none-does-not-establish-block-formatting-context.html | (1/1) | 100.00% | PASS |
| block-step-size-none-does-not-establish-indepdendent-formatting-context.html | (1/1) | 100.00% | PASS |
| content-based-height-rounds-up-to-step-unit.html | (0/1) | 0.00% | FAIL |
| definite-height-rounds-up-to-next-multiple-of-step-unit.html | (0/1) | 0.00% | FAIL |
| definite-height-rounds-up-to-step-unit.html | (0/1) | 0.00% | FAIL |
| definite-height-same-as-step-unit.html | (1/1) | 100.00% | PASS |
| zero-outer-size-rounded-up-to-block-step-size.html | (0/1) | 0.00% | FAIL |