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 | 52.10% | (173/332) | 52.11% | (173/332) | 52.11% |
| font-display | 25.00% | (1/4) | 25.00% | (1/4) | 25.00% |
| matching | 33.30% | (2/6) | 33.33% | (2/6) | 33.33% |
| math-script-level-and-math-style | 90.00% | (9/10) | 90.00% | (9/10) | 90.00% |
| variations | 50.00% | (9/18) | 50.00% | (9/18) | 50.00% |