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 / cssom-view
| Area | Interop Score | Tests | Test % | Subtests | Subtest % |
|---|---|---|---|---|---|
| Total | 45.40% | (5/11) | 45.45% | (5/11) | 45.45% |
| Test | Subtests | Subtest % | Status |
|---|---|---|---|
| add-background-attachment-fixed-during-smooth-scroll.html | (1/1) | 100.00% | PASS |
| cssom-getBoundingClientRect-vertical-rl.html | (1/1) | 100.00% | PASS |
| getClientRects-inline.html | (0/1) | 0.00% | FAIL |
| long_scroll_composited.html | (0/1) | 0.00% | FAIL |
| offsetTopLeft-inline.html | (0/1) | 0.00% | FAIL |
| scrollIntoView-should-treat-slot-as-scroll-container.html | (0/1) | 0.00% | FAIL |
| scrollTo-zoom.html | (0/1) | 0.00% | FAIL |
| scrollTop-display-change.html | (1/1) | 100.00% | PASS |
| scrollingElement-quirks-dynamic-001.html | (1/1) | 100.00% | PASS |
| scrollingElement-quirks-dynamic-002.html | (1/1) | 100.00% | PASS |
| window-scrollBy-display-change.html | (0/1) | 0.00% | FAIL |