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-backgrounds / background-size
| Area | Interop Score | Tests | Test % | Subtests | Subtest % |
|---|---|---|---|---|---|
| Total | 5.50% | (12/217) | 5.53% | (12/217) | 5.53% |
| vector | 3.30% | (7/206) | 3.40% | (7/206) | 3.40% |
| Test | Subtests | Subtest % | Status |
|---|---|---|---|
| background-size-contain-svg-view.html | (0/1) | 0.00% | FAIL |
| background-size-contain.xht | (0/1) | 0.00% | FAIL |
| background-size-cover-contain-001.xht | (1/1) | 100.00% | PASS |
| background-size-cover-contain-002.xht | (1/1) | 100.00% | PASS |
| background-size-cover-svg-view.html | (0/1) | 0.00% | FAIL |
| background-size-cover-svg.html | (1/1) | 100.00% | PASS |
| background-size-cover.xht | (0/1) | 0.00% | FAIL |
| background-size-near-zero-color.html | (1/1) | 100.00% | PASS |
| background-size-near-zero-gradient.html | (0/1) | 0.00% | FAIL |
| background-size-near-zero-png.html | (1/1) | 100.00% | PASS |
| background-size-near-zero-svg.html | (0/1) | 0.00% | FAIL |