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-values
| Area | Interop Score | Tests | Test % | Subtests | Subtest % |
|---|---|---|---|---|---|
| Total | 55.70% | (131/235) | 55.74% | (131/235) | 55.74% |
| animations | 100.00% | (1/1) | 100.00% | (1/1) | 100.00% |
| calc-size | 21.70% | (5/23) | 21.74% | (5/23) | 21.74% |
| crashtests | 100.00% | (2/2) | 100.00% | (2/2) | 100.00% |
| urls | 24.30% | (10/41) | 24.39% | (10/41) | 24.39% |