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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.

wpt / css / CSS2 / linebox

Score history
1 month3 months6 months1 year2 years4 yearsAll time
0%20%40%60%80%100%May 2025Jul 2025Sep 2025Nov 2025Jan 2026Mar 2026May 2026Jul 2026Sep 2026css/CSS2/linebox

Data from commit:
ab0e30b Give form controls a UA default font-family (#940) (2026-09-25)

AreaInterop ScoreTestsTest %SubtestsSubtest %
Total72.72%(145/201)72.14%(657/859)76.48%
animations80.50%(0/1)0.00%(506/628)80.57%
crashtests100.00%(2/2)100.00%(2/2)100.00%
TestSubtestsSubtest %Status
anonymous-inline-inherit-001.html(1/1)100.00%PASS
baseline-block-with-overflow-001.html(1/1)100.00%PASS
border-padding-bleed-001.xht(0/1)0.00%FAIL
border-padding-bleed-002.xht(0/1)0.00%FAIL
border-padding-bleed-003.xht(0/1)0.00%FAIL
empty-inline-001.xht(1/1)100.00%PASS
empty-inline-002.xht(0/1)0.00%FAIL
empty-inline-003.xht(0/1)0.00%FAIL
fractional-line-height.html(1/1)100.00%PASS
iframe-in-block-in-inline.html(1/1)100.00%PASS
iframe-in-wrapped-span.html(1/1)100.00%PASS
inline-box-001.xht(0/1)0.00%FAIL
inline-box-002.xht(0/1)0.00%FAIL
inline-children-root-linebox-crash-001.html(1/1)100.00%PASS
inline-formatting-context-001.xht(1/1)100.00%PASS
inline-formatting-context-002.xht(0/1)0.00%FAIL
inline-formatting-context-003.xht(0/1)0.00%FAIL
inline-formatting-context-004.xht(0/1)0.00%FAIL
inline-formatting-context-005.xht(0/1)0.00%FAIL
inline-formatting-context-006.xht(0/1)0.00%FAIL
inline-formatting-context-007.xht(0/1)0.00%FAIL
inline-formatting-context-008.xht(1/1)100.00%PASS
inline-formatting-context-009.xht(1/1)100.00%PASS
inline-formatting-context-011.xht(1/1)100.00%PASS
inline-formatting-context-012.xht(1/1)100.00%PASS
inline-formatting-context-013.xht(0/1)0.00%FAIL
inline-formatting-context-015.xht(1/1)100.00%PASS
inline-formatting-context-022.xht(0/1)0.00%FAIL
inline-formatting-context-023.xht(0/1)0.00%FAIL
inline-negative-margin-001.html(2/13)15.38%FAIL
inline-negative-margin-minmax-crash-001.html(1/1)100.00%PASS
leading-001.xht(1/1)100.00%PASS
line-box-height-002.xht(1/1)100.00%PASS
line-breaking-font-size-zero-001.html(0/1)0.00%FAIL
line-height-002.xht(1/1)100.00%PASS
line-height-004.xht(1/1)100.00%PASS
line-height-005.xht(1/1)100.00%PASS
line-height-006.xht(1/1)100.00%PASS
line-height-007.xht(1/1)100.00%PASS
line-height-013.xht(1/1)100.00%PASS
line-height-015.xht(1/1)100.00%PASS
line-height-016.xht(1/1)100.00%PASS
line-height-017.xht(1/1)100.00%PASS
line-height-018.xht(1/1)100.00%PASS
line-height-024.xht(1/1)100.00%PASS
line-height-025.xht(1/1)100.00%PASS
line-height-026.xht(1/1)100.00%PASS
line-height-027.xht(1/1)100.00%PASS
line-height-028.xht(1/1)100.00%PASS
line-height-029.xht(1/1)100.00%PASS
line-height-035.xht(1/1)100.00%PASS
line-height-037.xht(1/1)100.00%PASS
line-height-038.xht(1/1)100.00%PASS
line-height-039.xht(1/1)100.00%PASS
line-height-040.xht(1/1)100.00%PASS
line-height-046.xht(1/1)100.00%PASS
line-height-048.xht(1/1)100.00%PASS
line-height-049.xht(1/1)100.00%PASS
line-height-050.xht(1/1)100.00%PASS
line-height-051.xht(1/1)100.00%PASS
line-height-057.xht(1/1)100.00%PASS
line-height-058.xht(1/1)100.00%PASS
line-height-059.xht(1/1)100.00%PASS
line-height-060.xht(1/1)100.00%PASS
line-height-061.xht(1/1)100.00%PASS
line-height-062.xht(1/1)100.00%PASS
line-height-068.xht(1/1)100.00%PASS
line-height-069.xht(1/1)100.00%PASS
line-height-070.xht(1/1)100.00%PASS
line-height-071.xht(1/1)100.00%PASS
line-height-072.xht(1/1)100.00%PASS
line-height-073.xht(1/1)100.00%PASS
line-height-079.xht(1/1)100.00%PASS
line-height-080.xht(1/1)100.00%PASS
line-height-081.xht(1/1)100.00%PASS
line-height-082.xht(1/1)100.00%PASS
line-height-083.xht(1/1)100.00%PASS
line-height-084.xht(1/1)100.00%PASS
line-height-090.xht(1/1)100.00%PASS
line-height-092.xht(1/1)100.00%PASS
line-height-093.xht(1/1)100.00%PASS
line-height-094.xht(1/1)100.00%PASS
line-height-095.xht(1/1)100.00%PASS
line-height-101.xht(1/1)100.00%PASS
line-height-102.xht(1/1)100.00%PASS
line-height-103.xht(1/1)100.00%PASS
line-height-104.xht(1/1)100.00%PASS
line-height-105.xht(1/1)100.00%PASS
line-height-106.xht(1/1)100.00%PASS
line-height-112.xht(1/1)100.00%PASS
line-height-121.xht(1/1)100.00%PASS
line-height-125.xht(0/1)0.00%FAIL
line-height-126.xht(1/1)100.00%PASS
line-height-127.xht(0/1)0.00%FAIL
line-height-128.xht(1/1)100.00%PASS
line-height-129.xht(1/1)100.00%PASS
line-height-applies-to-001.xht(1/1)100.00%PASS
line-height-applies-to-002.xht(1/1)100.00%PASS
line-height-applies-to-003.xht(1/1)100.00%PASS
line-height-applies-to-004.xht(1/1)100.00%PASS
line-height-applies-to-005.xht(1/1)100.00%PASS
line-height-applies-to-006.xht(1/1)100.00%PASS
line-height-applies-to-007.xht(1/1)100.00%PASS
line-height-applies-to-008.xht(1/1)100.00%PASS
line-height-applies-to-009.xht(1/1)100.00%PASS
line-height-applies-to-012.xht(1/1)100.00%PASS
line-height-applies-to-013.xht(1/1)100.00%PASS
line-height-applies-to-014.xht(1/1)100.00%PASS
line-height-applies-to-015.xht(0/1)0.00%FAIL
line-height-applies-to-016.xht(1/1)100.00%PASS
line-height-bleed-001.xht(1/1)100.00%PASS
line-height-bleed-002.xht(1/1)100.00%PASS
line-height-oof-descendants-001.html(0/1)0.00%FAIL
needs-layout-transform.html(1/1)100.00%PASS
soft-wrap-opportunity-after-replaced-content-crash.html(1/1)100.00%PASS
split-inline-borders.html(0/1)0.00%FAIL
vertical-align-004.xht(1/1)100.00%PASS
vertical-align-005.xht(1/1)100.00%PASS
vertical-align-006.xht(1/1)100.00%PASS
vertical-align-007.xht(0/1)0.00%FAIL
vertical-align-008.xht(0/1)0.00%FAIL
vertical-align-016.xht(1/1)100.00%PASS
vertical-align-017.xht(1/1)100.00%PASS
vertical-align-018.xht(1/1)100.00%PASS
vertical-align-019.xht(0/1)0.00%FAIL
vertical-align-020.xht(0/1)0.00%FAIL
vertical-align-028.xht(1/1)100.00%PASS
vertical-align-029.xht(1/1)100.00%PASS
vertical-align-030.xht(1/1)100.00%PASS
vertical-align-031.xht(0/1)0.00%FAIL
vertical-align-032.xht(0/1)0.00%FAIL
vertical-align-040.xht(1/1)100.00%PASS
vertical-align-041.xht(1/1)100.00%PASS
vertical-align-042.xht(1/1)100.00%PASS
vertical-align-043.xht(0/1)0.00%FAIL
vertical-align-044.xht(0/1)0.00%FAIL
vertical-align-052.xht(1/1)100.00%PASS
vertical-align-053.xht(1/1)100.00%PASS
vertical-align-054.xht(1/1)100.00%PASS
vertical-align-055.xht(0/1)0.00%FAIL
vertical-align-056.xht(0/1)0.00%FAIL
vertical-align-064.xht(1/1)100.00%PASS
vertical-align-065.xht(1/1)100.00%PASS
vertical-align-066.xht(1/1)100.00%PASS
vertical-align-067.xht(0/1)0.00%FAIL
vertical-align-068.xht(0/1)0.00%FAIL
vertical-align-076.xht(1/1)100.00%PASS
vertical-align-077.xht(1/1)100.00%PASS
vertical-align-078.xht(1/1)100.00%PASS
vertical-align-079.xht(0/1)0.00%FAIL
vertical-align-080.xht(0/1)0.00%FAIL
vertical-align-088.xht(1/1)100.00%PASS
vertical-align-089.xht(1/1)100.00%PASS
vertical-align-090.xht(1/1)100.00%PASS
vertical-align-091.xht(0/1)0.00%FAIL
vertical-align-092.xht(0/1)0.00%FAIL
vertical-align-100.xht(1/1)100.00%PASS
vertical-align-101.xht(1/1)100.00%PASS
vertical-align-102.xht(1/1)100.00%PASS
vertical-align-103.xht(0/1)0.00%FAIL
vertical-align-104.xht(0/1)0.00%FAIL
vertical-align-109.xht(1/1)100.00%PASS
vertical-align-110.xht(1/1)100.00%PASS
vertical-align-111.xht(1/1)100.00%PASS
vertical-align-117a.xht(0/1)0.00%FAIL
vertical-align-118a.xht(0/1)0.00%FAIL
vertical-align-121.xht(0/1)0.00%FAIL
vertical-align-122.xht(0/1)0.00%FAIL
vertical-align-applies-to-001.xht(1/1)100.00%PASS
vertical-align-applies-to-002.xht(1/1)100.00%PASS
vertical-align-applies-to-003.xht(1/1)100.00%PASS
vertical-align-applies-to-004.xht(1/1)100.00%PASS
vertical-align-applies-to-005.xht(1/1)100.00%PASS
vertical-align-applies-to-006.xht(1/1)100.00%PASS
vertical-align-applies-to-007.xht(0/1)0.00%FAIL
vertical-align-applies-to-008.xht(0/1)0.00%FAIL
vertical-align-applies-to-009.xht(1/1)100.00%PASS
vertical-align-applies-to-012.xht(1/1)100.00%PASS
vertical-align-applies-to-013.xht(1/1)100.00%PASS
vertical-align-applies-to-014.xht(1/1)100.00%PASS
vertical-align-applies-to-015.xht(0/1)0.00%FAIL
vertical-align-baseline-001.xht(1/1)100.00%PASS
vertical-align-baseline-002.xht(1/1)100.00%PASS
vertical-align-baseline-003.xht(0/1)0.00%FAIL
vertical-align-baseline-004a.xht(0/1)0.00%FAIL
vertical-align-baseline-005a.xht(0/1)0.00%FAIL
vertical-align-baseline-006.xht(0/1)0.00%FAIL
vertical-align-baseline-007.xht(1/1)100.00%PASS
vertical-align-baseline-008.xht(1/1)100.00%PASS
vertical-align-baseline-009.xht(0/1)0.00%FAIL
vertical-align-baseline-010.xht(1/1)100.00%PASS
vertical-align-negative-leading-001.html(0/1)0.00%FAIL
vertical-align-nested-top-001.html(1/1)100.00%PASS
vertical-align-sub-001.xht(1/1)100.00%PASS
vertical-align-super-001.xht(1/1)100.00%PASS
vertical-align-top-bottom-001.html(4/20)20.00%FAIL
vertical-align-top-bottom-padding.html(1/1)100.00%PASS
video-needs-layout-crash.html(1/1)100.00%PASS