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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 / generated-content

AreaInterop ScoreTestsTest %SubtestsSubtest %
Total11.50%(26/226)11.50%(26/226)11.50%
TestSubtestsSubtest %Status
after-content-display-001.xht(0/1)0.00%FAIL
after-content-display-002.xht(0/1)0.00%FAIL
after-content-display-003.xht(0/1)0.00%FAIL
after-content-display-005.xht(0/1)0.00%FAIL
after-content-display-006.xht(0/1)0.00%FAIL
after-content-display-007.xht(0/1)0.00%FAIL
after-content-display-008.xht(0/1)0.00%CRASH
after-content-display-009.xht(0/1)0.00%CRASH
after-content-display-010.xht(0/1)0.00%CRASH
after-content-display-011.xht(0/1)0.00%CRASH
after-content-display-012.xht(0/1)0.00%CRASH
after-content-display-013.xht(0/1)0.00%CRASH
after-content-display-014.xht(0/1)0.00%FAIL
after-content-display-015.xht(0/1)0.00%FAIL
after-content-display-016.xht(1/1)100.00%PASS
after-content-display-017.xht(0/1)0.00%FAIL
after-content-display-018.xht(0/1)0.00%FAIL
after-inheritable-001.xht(1/1)100.00%PASS
after-inheritable-002.xht(0/1)0.00%FAIL
after-location-001.xht(1/1)100.00%PASS
before-after-001.xht(1/1)100.00%PASS
before-after-002.xht(0/1)0.00%FAIL
before-after-011.xht(0/1)0.00%FAIL
before-after-display-types-001.xht(0/1)0.00%CRASH
before-after-dynamic-attr-001.xht(0/1)0.00%FAIL
before-after-dynamic-restyle-001.xht(0/1)0.00%FAIL
before-after-floated-001.xht(0/1)0.00%FAIL
before-after-images-001.xht(1/1)100.00%PASS
before-after-positioned-001.xht(0/1)0.00%FAIL
before-after-positioned-002.html(0/1)0.00%FAIL
before-after-positioned-003.html(0/1)0.00%FAIL
before-after-positioned-004.html(1/1)100.00%PASS
before-after-table-parts-001.xht(0/1)0.00%CRASH
before-after-table-whitespace-001.xht(0/1)0.00%FAIL
before-content-display-001.xht(0/1)0.00%FAIL
before-content-display-002.xht(0/1)0.00%FAIL
before-content-display-003.xht(0/1)0.00%FAIL
before-content-display-005.xht(0/1)0.00%FAIL
before-content-display-006.xht(0/1)0.00%FAIL
before-content-display-007.xht(0/1)0.00%FAIL
before-content-display-008.xht(0/1)0.00%CRASH
before-content-display-009.xht(0/1)0.00%CRASH
before-content-display-010.xht(0/1)0.00%CRASH
before-content-display-011.xht(0/1)0.00%CRASH
before-content-display-012.xht(0/1)0.00%CRASH
before-content-display-013.xht(0/1)0.00%CRASH
before-content-display-014.xht(0/1)0.00%FAIL
before-content-display-015.xht(0/1)0.00%FAIL
before-content-display-016.xht(1/1)100.00%PASS
before-content-display-017.xht(0/1)0.00%FAIL
before-content-display-018.xht(0/1)0.00%FAIL
before-inheritable-001.xht(1/1)100.00%PASS
before-inheritable-002.xht(0/1)0.00%FAIL
before-location-001.xht(1/1)100.00%PASS
bidi-generated-content-001.xht(1/1)100.00%PASS
bidi-generated-content-002.xht(1/1)100.00%PASS
content-001.xht(1/1)100.00%PASS
content-002.xht(1/1)100.00%PASS
content-003.xht(1/1)100.00%PASS
content-004.xht(0/1)0.00%FAIL
content-005.xht(0/1)0.00%FAIL
content-006.xht(0/1)0.00%FAIL
content-007.xht(0/1)0.00%FAIL
content-009.xht(0/1)0.00%FAIL
content-010.xht(0/1)0.00%FAIL
content-011.xht(0/1)0.00%FAIL
content-012.xht(0/1)0.00%FAIL
content-013.xht(0/1)0.00%FAIL
content-014.xht(0/1)0.00%FAIL
content-015.xht(0/1)0.00%FAIL
content-016.xht(0/1)0.00%FAIL
content-017.xht(0/1)0.00%FAIL
content-018.xht(0/1)0.00%FAIL
content-019.xht(0/1)0.00%FAIL
content-020.xht(1/1)100.00%PASS
content-021.xht(0/1)0.00%FAIL
content-022.xht(0/1)0.00%FAIL
content-023.xht(0/1)0.00%FAIL
content-025.xht(0/1)0.00%FAIL
content-026.xht(0/1)0.00%FAIL
content-027.xht(0/1)0.00%FAIL
content-028.xht(0/1)0.00%FAIL
content-029.xht(0/1)0.00%FAIL
content-030.xht(0/1)0.00%FAIL
content-031.xht(0/1)0.00%FAIL
content-032.xht(0/1)0.00%FAIL
content-033.xht(0/1)0.00%FAIL
content-034.xht(0/1)0.00%FAIL
content-035.xht(0/1)0.00%FAIL
content-036.xht(1/1)100.00%PASS
content-037.xht(0/1)0.00%FAIL
content-038.xht(0/1)0.00%FAIL
content-039.xht(0/1)0.00%FAIL
content-040.xht(0/1)0.00%FAIL
content-041.xht(0/1)0.00%FAIL
content-042.xht(0/1)0.00%FAIL
content-043.xht(0/1)0.00%FAIL
content-046.xht(0/1)0.00%FAIL
content-047.xht(0/1)0.00%FAIL
content-048.xht(0/1)0.00%FAIL
content-050.xht(1/1)100.00%PASS
content-052.xht(0/1)0.00%FAIL
content-053.xht(0/1)0.00%FAIL
content-054.xht(0/1)0.00%FAIL
content-056.xht(0/1)0.00%FAIL
content-057.xht(0/1)0.00%FAIL
content-063.xht(0/1)0.00%FAIL
content-065.xht(0/1)0.00%FAIL
content-067.xht(0/1)0.00%FAIL
content-068.xht(0/1)0.00%FAIL
content-070.xht(0/1)0.00%FAIL
content-072.xht(0/1)0.00%FAIL
content-073.xht(0/1)0.00%FAIL
content-075.xht(0/1)0.00%FAIL
content-076.xht(0/1)0.00%FAIL
content-077.xht(0/1)0.00%FAIL
content-080.xht(0/1)0.00%FAIL
content-081.xht(0/1)0.00%FAIL
content-082.xht(0/1)0.00%FAIL
content-083.xht(0/1)0.00%FAIL
content-085.xht(0/1)0.00%FAIL
content-086.xht(0/1)0.00%FAIL
content-089.xht(0/1)0.00%FAIL
content-090.xht(0/1)0.00%FAIL
content-091.xht(0/1)0.00%FAIL
content-096.xht(0/1)0.00%FAIL
content-097.xht(0/1)0.00%FAIL
content-099.xht(0/1)0.00%FAIL
content-100.xht(0/1)0.00%FAIL
content-103.xht(0/1)0.00%FAIL
content-105.xht(0/1)0.00%FAIL
content-107.xht(0/1)0.00%FAIL
content-108.xht(0/1)0.00%FAIL
content-109.xht(0/1)0.00%FAIL
content-110.xht(0/1)0.00%FAIL
content-111.xht(0/1)0.00%FAIL
content-112.xht(0/1)0.00%FAIL
content-113.xht(0/1)0.00%FAIL
content-114.xht(0/1)0.00%FAIL
content-115.xht(0/1)0.00%FAIL
content-116.xht(0/1)0.00%FAIL
content-117.xht(0/1)0.00%FAIL
content-118.xht(0/1)0.00%FAIL
content-119.xht(0/1)0.00%FAIL
content-121.xht(0/1)0.00%FAIL
content-122.xht(0/1)0.00%FAIL
content-123.xht(0/1)0.00%FAIL
content-126.xht(0/1)0.00%FAIL
content-127.xht(0/1)0.00%FAIL
content-129.xht(0/1)0.00%FAIL
content-131.xht(0/1)0.00%FAIL
content-132.xht(0/1)0.00%FAIL
content-135.xht(0/1)0.00%FAIL
content-136.xht(0/1)0.00%FAIL
content-138.xht(0/1)0.00%FAIL
content-141.xht(0/1)0.00%FAIL
content-143.xht(0/1)0.00%FAIL
content-144.xht(0/1)0.00%FAIL
content-145.xht(0/1)0.00%FAIL
content-146.xht(0/1)0.00%FAIL
content-147.xht(0/1)0.00%FAIL
content-149.xht(0/1)0.00%FAIL
content-150.xht(0/1)0.00%FAIL
content-152.xht(0/1)0.00%FAIL
content-153.xht(0/1)0.00%FAIL
content-155.xht(0/1)0.00%FAIL
content-156.xht(0/1)0.00%FAIL
content-157.xht(0/1)0.00%FAIL
content-158.xht(0/1)0.00%FAIL
content-159.xht(0/1)0.00%FAIL
content-171.xht(1/1)100.00%PASS
content-172.xht(0/1)0.00%FAIL
content-173.xht(0/1)0.00%FAIL
content-174.xht(0/1)0.00%FAIL
content-175.xht(0/1)0.00%FAIL
content-177.xht(0/1)0.00%FAIL
content-attr-001.xht(1/1)100.00%PASS
content-attr-case-001.html(0/1)0.00%FAIL
content-attr-case-002.xht(1/1)100.00%PASS
content-auto-reset-001.xht(0/1)0.00%FAIL
content-counter-000.xht(0/1)0.00%FAIL
content-counter-001.xht(0/1)0.00%CRASH
content-counter-002.xht(0/1)0.00%FAIL
content-counter-003.xht(0/1)0.00%FAIL
content-counter-004.xht(1/1)100.00%PASS
content-counter-005.xht(0/1)0.00%FAIL
content-counter-006.xht(0/1)0.00%FAIL
content-counter-007.xht(0/1)0.00%FAIL
content-counter-008.xht(0/1)0.00%FAIL
content-counter-009.xht(0/1)0.00%FAIL
content-counter-010.xht(0/1)0.00%FAIL
content-counter-011.xht(0/1)0.00%FAIL
content-counter-012.xht(0/1)0.00%FAIL
content-counter-013.xht(0/1)0.00%FAIL
content-counter-014.xht(0/1)0.00%FAIL
content-counter-015.xht(0/1)0.00%FAIL
content-counter-016.xht(0/1)0.00%FAIL
content-inherit-002.xht(1/1)100.00%PASS
content-newline-001.xht(1/1)100.00%PASS
content-white-space-001.xht(0/1)0.00%FAIL
content-white-space-002.xht(0/1)0.00%FAIL
content-white-space-003.xht(1/1)100.00%PASS
content-white-space-004.xht(1/1)100.00%PASS
counters-hidden-000.xht(0/1)0.00%FAIL
counters-hidden-001.xht(0/1)0.00%FAIL
counters-hidden-002.xht(0/1)0.00%FAIL
counters-multi-000.xht(0/1)0.00%FAIL
counters-multi-001.xht(0/1)0.00%FAIL
counters-order-000.xht(0/1)0.00%FAIL
counters-root-000.xht(0/1)0.00%FAIL
multiple-content-values-001.xht(0/1)0.00%FAIL
other-attribute-001.xht(1/1)100.00%PASS
quotes-035.xht(0/1)0.00%FAIL
quotes-035a.xht(0/1)0.00%FAIL
quotes-036.xht(0/1)0.00%FAIL
quotes-applies-to-001.xht(0/1)0.00%FAIL
quotes-applies-to-002.xht(0/1)0.00%FAIL
quotes-applies-to-003.xht(0/1)0.00%FAIL
quotes-applies-to-004.xht(0/1)0.00%FAIL
quotes-applies-to-007.xht(0/1)0.00%FAIL
quotes-applies-to-008.xht(0/1)0.00%FAIL
quotes-applies-to-009.xht(0/1)0.00%FAIL
quotes-applies-to-012.xht(0/1)0.00%FAIL
quotes-applies-to-013.xht(0/1)0.00%FAIL
quotes-applies-to-014.xht(0/1)0.00%FAIL
quotes-applies-to-015.xht(0/1)0.00%FAIL