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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 / floats-clear

AreaInterop ScoreTestsTest %SubtestsSubtest %
Total70.00%(150/214)70.09%(150/214)70.09%
TestSubtestsSubtest %Status
adjacent-floats-001.xht(1/1)100.00%PASS
adjoining-float-before-clearance.html(1/1)100.00%PASS
adjoining-float-nested-forced-clearance-002.html(0/1)0.00%FAIL
adjoining-float-nested-forced-clearance-003.html(0/1)0.00%FAIL
adjoining-float-nested-forced-clearance-004.html(1/1)100.00%PASS
adjoining-float-nested-forced-clearance.html(1/1)100.00%PASS
adjoining-float-new-fc.html(1/1)100.00%PASS
clear-001.xht(1/1)100.00%PASS
clear-002.xht(1/1)100.00%PASS
clear-003.xht(0/1)0.00%FAIL
clear-004.xht(1/1)100.00%PASS
clear-005.xht(1/1)100.00%PASS
clear-after-top-margin.html(1/1)100.00%PASS
clear-applies-to-000.xht(0/1)0.00%FAIL
clear-applies-to-001.xht(0/1)0.00%FAIL
clear-applies-to-002.xht(0/1)0.00%FAIL
clear-applies-to-003.xht(0/1)0.00%FAIL
clear-applies-to-004.xht(0/1)0.00%FAIL
clear-applies-to-005.xht(0/1)0.00%FAIL
clear-applies-to-006.xht(0/1)0.00%FAIL
clear-applies-to-007.xht(0/1)0.00%FAIL
clear-applies-to-008.xht(0/1)0.00%FAIL
clear-applies-to-009.xht(1/1)100.00%PASS
clear-applies-to-012.xht(0/1)0.00%FAIL
clear-applies-to-013.xht(1/1)100.00%PASS
clear-applies-to-014.xht(0/1)0.00%FAIL
clear-applies-to-015.xht(0/1)0.00%FAIL
clear-clearance-calculation-001.xht(1/1)100.00%PASS
clear-clearance-calculation-002.xht(1/1)100.00%PASS
clear-clearance-calculation-003.xht(1/1)100.00%PASS
clear-clearance-calculation-004.xht(0/1)0.00%FAIL
clear-clearance-calculation-005.xht(0/1)0.00%FAIL
clear-default-inheritance-001.xht(1/1)100.00%PASS
clear-float-001.xht(1/1)100.00%PASS
clear-float-002.xht(1/1)100.00%PASS
clear-float-003.xht(1/1)100.00%PASS
clear-float-004.xht(1/1)100.00%PASS
clear-float-005.xht(1/1)100.00%PASS
clear-float-006.xht(1/1)100.00%PASS
clear-float-007.xht(1/1)100.00%PASS
clear-float-008.xht(1/1)100.00%PASS
clear-float-009.xht(1/1)100.00%PASS
clear-initial-001.xht(1/1)100.00%PASS
clear-inline-001.xht(0/1)0.00%FAIL
clear-on-child-with-margins-2.html(1/1)100.00%PASS
clear-on-child-with-margins.html(1/1)100.00%PASS
clear-on-parent-and-child.html(0/1)0.00%FAIL
clear-on-parent-with-margins-no-clearance.html(1/1)100.00%PASS
clear-on-parent-with-margins.html(1/1)100.00%PASS
clear-on-parent.html(1/1)100.00%PASS
clear-on-replaced-element.html(1/1)100.00%PASS
clear-with-top-margin-after-cleared-empty-block.html(1/1)100.00%PASS
clearance-006.xht(1/1)100.00%PASS
float-003.xht(1/1)100.00%PASS
float-005.xht(1/1)100.00%PASS
float-006.xht(1/1)100.00%PASS
float-applies-to-001.xht(0/1)0.00%FAIL
float-applies-to-001a.xht(0/1)0.00%FAIL
float-applies-to-002.xht(0/1)0.00%FAIL
float-applies-to-003.xht(0/1)0.00%FAIL
float-applies-to-004.xht(0/1)0.00%FAIL
float-applies-to-004a.xht(0/1)0.00%FAIL
float-applies-to-005.xht(0/1)0.00%FAIL
float-applies-to-006.xht(0/1)0.00%FAIL
float-applies-to-007.xht(0/1)0.00%FAIL
float-applies-to-008.xht(0/1)0.00%FAIL
float-applies-to-008a.xht(1/1)100.00%PASS
float-applies-to-009.xht(1/1)100.00%PASS
float-applies-to-012.xht(1/1)100.00%PASS
float-applies-to-013.xht(1/1)100.00%PASS
float-applies-to-014.xht(1/1)100.00%PASS
float-applies-to-015.xht(0/1)0.00%FAIL
float-non-replaced-height-001.xht(1/1)100.00%PASS
float-non-replaced-width-001.xht(1/1)100.00%PASS
float-non-replaced-width-002.xht(1/1)100.00%PASS
float-non-replaced-width-003.xht(1/1)100.00%PASS
float-non-replaced-width-004.xht(1/1)100.00%PASS
float-non-replaced-width-005.xht(1/1)100.00%PASS
float-non-replaced-width-007.xht(1/1)100.00%PASS
float-non-replaced-width-008.xht(1/1)100.00%PASS
float-non-replaced-width-009.xht(1/1)100.00%PASS
float-non-replaced-width-010.xht(1/1)100.00%PASS
float-non-replaced-width-011.xht(1/1)100.00%PASS
float-non-replaced-width-012.xht(1/1)100.00%PASS
float-replaced-height-001.xht(0/1)0.00%FAIL
float-replaced-height-002.xht(1/1)100.00%PASS
float-replaced-height-003.xht(1/1)100.00%PASS
float-replaced-height-004.xht(1/1)100.00%PASS
float-replaced-height-005.xht(1/1)100.00%PASS
float-replaced-height-006.xht(0/1)0.00%FAIL
float-replaced-height-007.xht(1/1)100.00%PASS
float-replaced-width-001.xht(1/1)100.00%PASS
float-replaced-width-002.xht(1/1)100.00%PASS
float-replaced-width-003.xht(1/1)100.00%PASS
float-replaced-width-004.xht(1/1)100.00%PASS
float-replaced-width-005.xht(1/1)100.00%PASS
float-replaced-width-006.xht(1/1)100.00%PASS
float-replaced-width-007.xht(0/1)0.00%FAIL
float-replaced-width-008.xht(1/1)100.00%PASS
float-replaced-width-009.xht(1/1)100.00%PASS
float-replaced-width-011.xht(1/1)100.00%PASS
floats-001.xht(1/1)100.00%PASS
floats-002.xht(1/1)100.00%PASS
floats-003.xht(1/1)100.00%PASS
floats-004.xht(1/1)100.00%PASS
floats-005.xht(1/1)100.00%PASS
floats-006.xht(1/1)100.00%PASS
floats-007.xht(0/1)0.00%FAIL
floats-008.xht(1/1)100.00%PASS
floats-009.xht(1/1)100.00%PASS
floats-014.xht(1/1)100.00%PASS
floats-015.xht(1/1)100.00%PASS
floats-019.xht(0/1)0.00%FAIL
floats-022.xht(1/1)100.00%PASS
floats-023.xht(1/1)100.00%PASS
floats-024.xht(1/1)100.00%PASS
floats-025.xht(1/1)100.00%PASS
floats-026.xht(1/1)100.00%PASS
floats-027.xht(1/1)100.00%PASS
floats-028.xht(1/1)100.00%PASS
floats-029.xht(0/1)0.00%FAIL
floats-030.xht(0/1)0.00%FAIL
floats-031.xht(0/1)0.00%FAIL
floats-036.xht(0/1)0.00%FAIL
floats-038.xht(0/1)0.00%FAIL
floats-039.xht(0/1)0.00%FAIL
floats-040.xht(0/1)0.00%FAIL
floats-041.xht(1/1)100.00%PASS
floats-043.xht(1/1)100.00%PASS
floats-101.xht(0/1)0.00%FAIL
floats-111.xht(1/1)100.00%PASS
floats-112.xht(1/1)100.00%PASS
floats-113.xht(1/1)100.00%PASS
floats-114.xht(0/1)0.00%FAIL
floats-115.xht(1/1)100.00%PASS
floats-116.xht(1/1)100.00%PASS
floats-117.xht(1/1)100.00%PASS
floats-118.xht(1/1)100.00%PASS
floats-119.xht(1/1)100.00%PASS
floats-120.xht(1/1)100.00%PASS
floats-121.xht(1/1)100.00%PASS
floats-122.xht(1/1)100.00%PASS
floats-123.xht(1/1)100.00%PASS
floats-124.xht(0/1)0.00%FAIL
floats-125.xht(1/1)100.00%PASS
floats-132.xht(0/1)0.00%FAIL
floats-133.xht(1/1)100.00%PASS
floats-134.xht(1/1)100.00%PASS
floats-135.xht(1/1)100.00%PASS
floats-136.xht(1/1)100.00%PASS
floats-138.xht(1/1)100.00%PASS
floats-139.xht(0/1)0.00%FAIL
floats-141.xht(1/1)100.00%PASS
floats-142.xht(1/1)100.00%PASS
floats-143.xht(0/1)0.00%FAIL
floats-144.xht(1/1)100.00%PASS
floats-145.xht(1/1)100.00%PASS
floats-146.xht(1/1)100.00%PASS
floats-147.xht(1/1)100.00%PASS
floats-149.xht(1/1)100.00%PASS
floats-150.xht(1/1)100.00%PASS
floats-152.xht(1/1)100.00%PASS
floats-153.xht(0/1)0.00%FAIL
floats-154.xht(1/1)100.00%PASS
floats-bfc-001.xht(1/1)100.00%PASS
floats-bfc-002.xht(1/1)100.00%PASS
floats-bfc-003.html(0/1)0.00%FAIL
floats-clear-multicol-000.html(0/1)0.00%FAIL
floats-clear-multicol-001.html(0/1)0.00%FAIL
floats-clear-multicol-002.html(1/1)100.00%PASS
floats-clear-multicol-003.html(1/1)100.00%PASS
floats-clear-multicol-balancing-000.html(0/1)0.00%FAIL
floats-clear-multicol-balancing-001.html(0/1)0.00%FAIL
floats-clear-multicol-balancing-002.html(1/1)100.00%PASS
floats-clear-multicol-balancing-003.html(1/1)100.00%PASS
margin-collapse-018.xht(1/1)100.00%PASS
margin-collapse-023.xht(1/1)100.00%PASS
margin-collapse-024.xht(1/1)100.00%PASS
margin-collapse-027.xht(1/1)100.00%PASS
margin-collapse-031.xht(1/1)100.00%PASS
margin-collapse-033.xht(1/1)100.00%PASS
margin-collapse-034.xht(1/1)100.00%PASS
margin-collapse-035.xht(1/1)100.00%PASS
margin-collapse-121.xht(1/1)100.00%PASS
margin-collapse-122.xht(1/1)100.00%PASS
margin-collapse-123.xht(1/1)100.00%PASS
margin-collapse-125.xht(1/1)100.00%PASS
margin-collapse-134.xht(1/1)100.00%PASS
margin-collapse-135.xht(1/1)100.00%PASS
margin-collapse-142.xht(1/1)100.00%PASS
margin-collapse-157.xht(0/1)0.00%FAIL
margin-collapse-158.xht(0/1)0.00%FAIL
margin-collapse-165.xht(1/1)100.00%PASS
margin-collapse-166.xht(0/1)0.00%FAIL
margin-collapse-clear-002.xht(0/1)0.00%FAIL
margin-collapse-clear-003.xht(0/1)0.00%FAIL
margin-collapse-clear-008.xht(0/1)0.00%FAIL
margin-collapse-clear-009.xht(0/1)0.00%FAIL
margin-collapse-clear-012.xht(1/1)100.00%PASS
margin-collapse-clear-013.xht(1/1)100.00%PASS
margin-collapse-clear-014.xht(0/1)0.00%FAIL
margin-collapse-clear-015.xht(1/1)100.00%PASS
margin-collapse-clear-016.xht(1/1)100.00%PASS
margin-collapse-clear-017.xht(1/1)100.00%PASS
negative-clearance-after-adjoining-float.html(1/1)100.00%PASS
negative-clearance-after-bottom-margin.html(1/1)100.00%PASS
nested-clearance-new-formatting-context.html(1/1)100.00%PASS
no-clearance-adjoining-opposite-float.html(1/1)100.00%PASS
no-clearance-due-to-large-margin-after-left-right.html(1/1)100.00%PASS
no-clearance-due-to-large-margin.html(1/1)100.00%PASS
remove-block-before-self-collapsing-sibling-with-clearance.html(0/1)0.00%FAIL
second-float-inside-empty-cleared-block-after-margin.html(1/1)100.00%PASS
second-float-inside-empty-cleared-block.html(1/1)100.00%PASS
table-among-floats-001.html(0/1)0.00%FAIL