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Status

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

CSS PropertiesHTML ElementsEventsWPT Tests

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 / CSS2 / bidi-text

AreaInterop ScoreTestsTest %SubtestsSubtest %
Total35.20%(37/105)35.24%(37/105)35.24%
TestSubtestsSubtest %Status
bidi-001.xht(0/1)0.00%FAIL
bidi-002.xht(0/1)0.00%FAIL
bidi-003.xht(0/1)0.00%FAIL
bidi-004.xht(0/1)0.00%FAIL
bidi-005a.xht(1/1)100.00%PASS
bidi-005b.xht(0/1)0.00%FAIL
bidi-006a.xht(1/1)100.00%PASS
bidi-006b.xht(0/1)0.00%FAIL
bidi-007a.xht(1/1)100.00%PASS
bidi-007b.xht(0/1)0.00%FAIL
bidi-008a.xht(1/1)100.00%PASS
bidi-008b.xht(1/1)100.00%PASS
bidi-009a.xht(0/1)0.00%CRASH
bidi-009b.xht(0/1)0.00%CRASH
bidi-010a.xht(1/1)100.00%PASS
bidi-010b.xht(0/1)0.00%FAIL
bidi-011.xht(1/1)100.00%PASS
bidi-box-model-001.xht(1/1)100.00%PASS
bidi-box-model-002.xht(1/1)100.00%PASS
bidi-box-model-003.xht(0/1)0.00%FAIL
bidi-box-model-004.xht(1/1)100.00%PASS
bidi-box-model-005.xht(1/1)100.00%PASS
bidi-box-model-006.xht(0/1)0.00%FAIL
bidi-box-model-007.xht(1/1)100.00%PASS
bidi-box-model-008.xht(1/1)100.00%PASS
bidi-box-model-009.xht(0/1)0.00%FAIL
bidi-box-model-010.xht(0/1)0.00%FAIL
bidi-box-model-011.xht(0/1)0.00%FAIL
bidi-box-model-012.xht(0/1)0.00%FAIL
bidi-box-model-013.xht(0/1)0.00%FAIL
bidi-box-model-014.xht(0/1)0.00%FAIL
bidi-box-model-015.xht(0/1)0.00%FAIL
bidi-box-model-016.xht(1/1)100.00%PASS
bidi-box-model-017.xht(1/1)100.00%PASS
bidi-box-model-018.xht(1/1)100.00%PASS
bidi-box-model-019.xht(0/1)0.00%FAIL
bidi-box-model-020.xht(0/1)0.00%FAIL
bidi-box-model-021.xht(0/1)0.00%FAIL
bidi-box-model-022.xht(0/1)0.00%FAIL
bidi-box-model-023.xht(0/1)0.00%FAIL
bidi-box-model-024.xht(0/1)0.00%FAIL
bidi-box-model-025.xht(1/1)100.00%PASS
bidi-box-model-026.xht(1/1)100.00%PASS
bidi-box-model-027.xht(1/1)100.00%PASS
bidi-box-model-028.xht(0/1)0.00%FAIL
bidi-box-model-029.xht(0/1)0.00%FAIL
bidi-box-model-030.xht(0/1)0.00%FAIL
bidi-box-model-031.xht(0/1)0.00%FAIL
bidi-box-model-032.xht(0/1)0.00%FAIL
bidi-box-model-033.xht(0/1)0.00%FAIL
bidi-box-model-034.xht(1/1)100.00%PASS
bidi-box-model-035.xht(1/1)100.00%PASS
bidi-box-model-036.xht(1/1)100.00%PASS
bidi-box-model-037.xht(0/1)0.00%FAIL
bidi-box-model-038.xht(0/1)0.00%FAIL
bidi-box-model-039.xht(0/1)0.00%FAIL
bidi-box-model-040.xht(0/1)0.00%FAIL
bidi-box-model-041.xht(0/1)0.00%FAIL
bidi-box-model-042.xht(0/1)0.00%FAIL
bidi-box-model-043.xht(1/1)100.00%PASS
bidi-box-model-044.xht(1/1)100.00%PASS
bidi-box-model-045.xht(1/1)100.00%PASS
bidi-breaking-001.xht(0/1)0.00%FAIL
bidi-breaking-002.xht(0/1)0.00%FAIL
bidi-breaking-003.xht(0/1)0.00%FAIL
bidi-glyph-mirroring-001.xht(0/1)0.00%FAIL
bidi-glyph-mirroring-002.xht(0/1)0.00%FAIL
bidi-inline-001.xht(0/1)0.00%FAIL
bidi-inline-002.xht(0/1)0.00%FAIL
direction-001.xht(1/1)100.00%PASS
direction-002.xht(0/1)0.00%FAIL
direction-003.xht(0/1)0.00%FAIL
direction-applies-to-001.xht(0/1)0.00%FAIL
direction-applies-to-002.xht(0/1)0.00%FAIL
direction-applies-to-003.xht(0/1)0.00%FAIL
direction-applies-to-004.xht(1/1)100.00%PASS
direction-applies-to-005.xht(0/1)0.00%FAIL
direction-applies-to-006.xht(0/1)0.00%FAIL
direction-applies-to-007.xht(0/1)0.00%FAIL
direction-applies-to-008.xht(0/1)0.00%FAIL
direction-applies-to-009.xht(0/1)0.00%FAIL
direction-applies-to-012.xht(0/1)0.00%FAIL
direction-applies-to-013.xht(0/1)0.00%FAIL
direction-applies-to-014.xht(0/1)0.00%FAIL
direction-applies-to-015.xht(0/1)0.00%FAIL
line-breaking-bidi-001.xht(1/1)100.00%PASS
line-breaking-bidi-002.xht(1/1)100.00%PASS
line-breaking-bidi-003.xht(0/1)0.00%FAIL
unicode-bidi-001.xht(0/1)0.00%FAIL
unicode-bidi-002.xht(0/1)0.00%FAIL
unicode-bidi-003.xht(0/1)0.00%FAIL
unicode-bidi-004.xht(0/1)0.00%FAIL
unicode-bidi-applies-to-001.xht(1/1)100.00%PASS
unicode-bidi-applies-to-002.xht(1/1)100.00%PASS
unicode-bidi-applies-to-003.xht(1/1)100.00%PASS
unicode-bidi-applies-to-004.xht(1/1)100.00%PASS
unicode-bidi-applies-to-005.xht(1/1)100.00%PASS
unicode-bidi-applies-to-006.xht(1/1)100.00%PASS
unicode-bidi-applies-to-007.xht(0/1)0.00%FAIL
unicode-bidi-applies-to-008.xht(0/1)0.00%FAIL
unicode-bidi-applies-to-009.xht(0/1)0.00%FAIL
unicode-bidi-applies-to-012.xht(0/1)0.00%FAIL
unicode-bidi-applies-to-013.xht(1/1)100.00%PASS
unicode-bidi-applies-to-014.xht(1/1)100.00%PASS
unicode-bidi-applies-to-015.xht(0/1)0.00%FAIL