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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:
708eb61 WPT runner: support mismatch reftests and multiple rel=match links (#665) (2026-08-09)

wpt / css / css-display / run-in

AreaInterop ScoreTestsTest %SubtestsSubtest %
Total30.00%(40/133)30.08%(40/133)30.08%
TestSubtestsSubtest %Status
counter-increment-applies-to-011.xht(0/1)0.00%FAIL
counter-reset-applies-to-011.xht(0/1)0.00%FAIL
font-style-applies-to-004.xht(1/1)100.00%PASS
font-variant-applies-to-004.xht(1/1)100.00%PASS
font-weight-applies-to-004.xht(1/1)100.00%PASS
height-applies-to-011.xht(1/1)100.00%PASS
letter-spacing-applies-to-004.xht(1/1)100.00%PASS
list-style-applies-to-011.xht(1/1)100.00%PASS
list-style-type-applies-to-011.xht(1/1)100.00%PASS
max-height-applies-to-011.xht(1/1)100.00%PASS
max-width-applies-to-011.xht(1/1)100.00%PASS
min-height-applies-to-011.xht(1/1)100.00%PASS
min-width-applies-to-011.xht(1/1)100.00%PASS
quotes-applies-to-011.xht(0/1)0.00%FAIL
run-in-abspos-between-001.xht(0/1)0.00%FAIL
run-in-abspos-between-002.xht(0/1)0.00%FAIL
run-in-abspos-between-003.xht(0/1)0.00%FAIL
run-in-basic-001.xht(0/1)0.00%FAIL
run-in-basic-002.xht(0/1)0.00%FAIL
run-in-basic-003.xht(0/1)0.00%FAIL
run-in-basic-004.xht(0/1)0.00%FAIL
run-in-basic-005.xht(0/1)0.00%FAIL
run-in-basic-006.xht(0/1)0.00%FAIL
run-in-basic-007.xht(0/1)0.00%FAIL
run-in-basic-008.xht(0/1)0.00%FAIL
run-in-basic-009.xht(0/1)0.00%FAIL
run-in-basic-010.xht(0/1)0.00%FAIL
run-in-basic-011.xht(0/1)0.00%FAIL
run-in-basic-012.xht(0/1)0.00%FAIL
run-in-basic-013.xht(0/1)0.00%FAIL
run-in-basic-014.xht(1/1)100.00%PASS
run-in-basic-015.xht(1/1)100.00%PASS
run-in-basic-016.xht(1/1)100.00%PASS
run-in-basic-017.xht(1/1)100.00%PASS
run-in-basic-018.xht(0/1)0.00%FAIL
run-in-block-between-001.xht(1/1)100.00%PASS
run-in-block-between-002.xht(0/1)0.00%FAIL
run-in-block-between-003.xht(0/1)0.00%FAIL
run-in-breaking-001.xht(0/1)0.00%FAIL
run-in-breaking-002.xht(0/1)0.00%FAIL
run-in-clear-001.xht(0/1)0.00%FAIL
run-in-clear-002.xht(0/1)0.00%FAIL
run-in-contains-abspos-001.xht(0/1)0.00%FAIL
run-in-contains-block-001.xht(1/1)100.00%PASS
run-in-contains-block-002.xht(1/1)100.00%PASS
run-in-contains-block-003.xht(0/1)0.00%FAIL
run-in-contains-block-004.xht(1/1)100.00%PASS
run-in-contains-block-005.xht(0/1)0.00%FAIL
run-in-contains-block-inside-inline-001.xht(1/1)100.00%PASS
run-in-contains-block-inside-inline-002.xht(1/1)100.00%PASS
run-in-contains-block-inside-inline-003.xht(0/1)0.00%FAIL
run-in-contains-float-001.xht(0/1)0.00%FAIL
run-in-contains-inline-001.xht(0/1)0.00%FAIL
run-in-contains-inline-002.xht(0/1)0.00%FAIL
run-in-contains-inline-003.xht(0/1)0.00%FAIL
run-in-contains-inline-004.xht(0/1)0.00%FAIL
run-in-contains-inline-005.xht(0/1)0.00%CRASH
run-in-contains-inline-006.xht(0/1)0.00%FAIL
run-in-contains-inline-007.xht(0/1)0.00%FAIL
run-in-contains-inline-block-001.xht(0/1)0.00%FAIL
run-in-contains-inline-table-001.xht(0/1)0.00%FAIL
run-in-contains-relpos-block-001.xht(1/1)100.00%PASS
run-in-contains-relpos-block-002.xht(1/1)100.00%PASS
run-in-contains-relpos-block-003.xht(0/1)0.00%FAIL
run-in-contains-run-in-001.xht(1/1)100.00%PASS
run-in-contains-run-in-002.xht(1/1)100.00%PASS
run-in-contains-run-in-003.xht(0/1)0.00%FAIL
run-in-contains-table-001.xht(1/1)100.00%PASS
run-in-contains-table-002.xht(1/1)100.00%PASS
run-in-contains-table-003.xht(0/1)0.00%FAIL
run-in-contains-table-caption-001.xht(0/1)0.00%FAIL
run-in-contains-table-cell-001.xht(0/1)0.00%FAIL
run-in-contains-table-column-001.xht(0/1)0.00%FAIL
run-in-contains-table-column-group-001.xht(0/1)0.00%FAIL
run-in-contains-table-inside-inline-001.xht(1/1)100.00%PASS
run-in-contains-table-inside-inline-002.xht(1/1)100.00%PASS
run-in-contains-table-inside-inline-003.xht(0/1)0.00%FAIL
run-in-contains-table-row-001.xht(0/1)0.00%CRASH
run-in-contains-table-row-group-001.xht(0/1)0.00%CRASH
run-in-display-none-between-001.xht(0/1)0.00%FAIL
run-in-display-none-between-002.xht(0/1)0.00%FAIL
run-in-display-none-between-003.xht(0/1)0.00%FAIL
run-in-fixedpos-between-001.xht(0/1)0.00%FAIL
run-in-fixedpos-between-002.xht(0/1)0.00%FAIL
run-in-fixedpos-between-003.xht(0/1)0.00%FAIL
run-in-float-between-001.xht(0/1)0.00%FAIL
run-in-float-between-002.xht(0/1)0.00%FAIL
run-in-float-between-003.xht(0/1)0.00%FAIL
run-in-inherit-001.xht(0/1)0.00%FAIL
run-in-inline-between-001.xht(1/1)100.00%PASS
run-in-inline-between-002.xht(0/1)0.00%FAIL
run-in-inline-between-003.xht(0/1)0.00%FAIL
run-in-inline-block-between-001.xht(1/1)100.00%PASS
run-in-inline-block-between-002.xht(0/1)0.00%FAIL
run-in-inline-block-between-003.xht(0/1)0.00%FAIL
run-in-inline-table-between-001.xht(0/1)0.00%FAIL
run-in-inline-table-between-002.xht(0/1)0.00%FAIL
run-in-inline-table-between-003.xht(0/1)0.00%FAIL
run-in-listitem-between-001.xht(1/1)100.00%PASS
run-in-listitem-between-002.xht(0/1)0.00%FAIL
run-in-listitem-between-003.xht(0/1)0.00%FAIL
run-in-relpos-between-001.xht(1/1)100.00%PASS
run-in-relpos-between-002.xht(0/1)0.00%FAIL
run-in-relpos-between-003.xht(0/1)0.00%FAIL
run-in-replaced-001.xht(0/1)0.00%FAIL
run-in-restyle-001.xht(1/1)100.00%PASS
run-in-restyle-002.xht(1/1)100.00%PASS
run-in-restyle-003.xht(0/1)0.00%FAIL
run-in-run-in-between-001.xht(1/1)100.00%PASS
run-in-run-in-between-002.xht(0/1)0.00%FAIL
run-in-run-in-between-003.xht(0/1)0.00%FAIL
run-in-run-in-between-004.xht(0/1)0.00%FAIL
run-in-run-in-between-005.xht(0/1)0.00%FAIL
run-in-run-in-between-006.xht(0/1)0.00%FAIL
run-in-run-in-between-007.xht(0/1)0.00%FAIL
run-in-run-in-between-008.xht(0/1)0.00%FAIL
run-in-table-between-001.xht(0/1)0.00%FAIL
run-in-table-between-002.xht(0/1)0.00%FAIL
run-in-table-between-003.xht(0/1)0.00%FAIL
run-in-table-cell-between-001.xht(1/1)100.00%PASS
run-in-table-cell-between-002.xht(0/1)0.00%FAIL
run-in-table-cell-between-003.xht(0/1)0.00%FAIL
run-in-table-row-between-001.xht(0/1)0.00%CRASH
run-in-table-row-between-002.xht(0/1)0.00%FAIL
run-in-table-row-between-003.xht(0/1)0.00%CRASH
run-in-text-between-001.xht(1/1)100.00%PASS
run-in-text-between-002.xht(0/1)0.00%FAIL
run-in-text-between-003.xht(0/1)0.00%FAIL
run-in-text-between-004.xht(0/1)0.00%FAIL
run-in-text-between-005.xht(0/1)0.00%FAIL
text-decoration-applies-to-004.xht(1/1)100.00%PASS
text-transform-applies-to-004.xht(0/1)0.00%FAIL
width-applies-to-011.xht(1/1)100.00%PASS