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Status

This page documents the implementation status of various HTML and CSS features in Blitz.

CSS PropertiesHTML ElementsEventsWPT TestsWPT History

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.

wpt / css / geometry

Score history
1 month3 months6 months1 yearAll time
0%20%40%60%80%100%Sep 2026css/geometry

Data from commit:
1884860 Copy-on-write style attribute blocks that are in the rule tree (#831) (2026-09-02)

AreaInterop ScoreTestsTest %SubtestsSubtest %
Total1.50%(0/27)0.00%(15/681)2.20%
TestSubtestsSubtest %Status
DOMMatrix-001.html(8/138)5.80%FAIL
DOMMatrix-002.html(0/13)0.00%FAIL
DOMMatrix-003.html(0/24)0.00%FAIL
DOMMatrix-a-f-alias.html(0/36)0.00%FAIL
DOMMatrix-attributes.html(0/22)0.00%FAIL
DOMMatrix-invert-invertible.html(0/6)0.00%FAIL
DOMMatrix-invert-non-invertible.html(0/2)0.00%FAIL
DOMMatrix-invert-preserves-2d.html(0/2)0.00%FAIL
DOMMatrix-invertSelf.html(0/4)0.00%FAIL
DOMMatrix-newobject.html(0/30)0.00%FAIL
DOMMatrix-stringifier.html(0/78)0.00%FAIL
DOMMatrix2DInit-validate-fixup.html(0/1)0.00%FAIL
DOMMatrixInit-validate-fixup.html(0/91)0.00%FAIL
DOMPoint-001.html(0/16)0.00%FAIL
DOMPoint-002.html(0/40)0.00%FAIL
DOMQuad-001.html(0/33)0.00%FAIL
DOMQuad-002.html(0/17)0.00%FAIL
DOMQuad-nan.html(0/8)0.00%FAIL
DOMRect-001.html(0/1)0.00%FAIL
DOMRect-002.html(0/32)0.00%FAIL
DOMRect-nan.html(0/1)0.00%FAIL
DOMRectList.html(1/5)20.00%FAIL
WebKitCSSMatrix.html(0/3)0.00%FAIL
historical.html(6/39)15.38%FAIL
idlharness.any.html(0/1)0.00%FAIL
spec-examples.html(0/7)0.00%FAIL
structured-serialization.html(0/31)0.00%FAIL