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-scroll-anchoring
| Area | Interop Score | Tests | Test % | Subtests | Subtest % |
|---|---|---|---|---|---|
| Total | 50.00% | (2/4) | 50.00% | (2/4) | 50.00% |
| Test | Subtests | Subtest % | Status |
|---|---|---|---|
| nested-overflow-subtree-layout-vertical.html | (1/1) | 100.00% | PASS |
| nested-overflow-subtree-layout.html | (1/1) | 100.00% | PASS |
| vertical-rl-viewport-size-change-000.html | (0/1) | 0.00% | FAIL |
| vertical-rl-viewport-size-change-001.html | (0/1) | 0.00% | FAIL |