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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 / css-page

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/css-page

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

AreaInterop ScoreTestsTest %SubtestsSubtest %
Total39.06%(100/258)38.76%(113/408)27.70%
parsing28.28%(3/11)27.27%(11/87)12.64%
margin-boxes0.00%(0/38)0.00%(0/38)0.00%
cssom0.00%(0/6)0.00%(0/15)0.00%
crashtests100.00%(10/10)100.00%(10/10)100.00%
tentative25.00%(1/4)25.00%(1/4)25.00%
TestSubtestsSubtest %Status
background-image-only-for-print.html(0/1)0.00%FAIL
basic-pagination-001-print.html(1/1)100.00%PASS
basic-pagination-002-print.html(0/1)0.00%FAIL
basic-pagination-003-print.html(0/1)0.00%FAIL
basic-pagination-004-print.html(0/1)0.00%FAIL
basic-pagination-005-print.html(1/1)100.00%PASS
body-background-slr-print.html(0/1)0.00%FAIL
body-background-srl-print.html(0/1)0.00%FAIL
body-background-vlr-print.html(0/1)0.00%FAIL
body-background-vrl-print.html(0/1)0.00%FAIL
fixedpos-001-print.html(0/1)0.00%FAIL
fixedpos-002-print.html(0/1)0.00%FAIL
fixedpos-003-print.html(0/1)0.00%FAIL
fixedpos-004-print.html(0/1)0.00%FAIL
fixedpos-005-print.html(0/1)0.00%FAIL
fixedpos-006-print.html(0/1)0.00%FAIL
fixedpos-007-print.html(0/1)0.00%FAIL
fixedpos-008-print.html(0/1)0.00%FAIL
fixedpos-009-print.html(0/1)0.00%FAIL
fixedpos-010-print.html(0/1)0.00%FAIL
fixedpos-011-print.html(0/1)0.00%FAIL
fixedpos-with-abspos-with-link-print.html(0/1)0.00%FAIL
fixedpos-with-iframe-print.html(0/1)0.00%FAIL
fixedpos-with-link-with-inline-child-print.html(0/1)0.00%FAIL
inheritance.html(0/2)0.00%FAIL
layers-001-print.html(1/1)100.00%PASS
layers-002-print.html(0/1)0.00%FAIL
layers-003-print.html(0/1)0.00%FAIL
layers-004-print.html(0/1)0.00%FAIL
media-queries-001-print.html(0/1)0.00%FAIL
media-queries-002-print.html(1/1)100.00%PASS
media-queries-003-print.html(0/1)0.00%FAIL
monolithic-overflow-001-print.html(1/1)100.00%PASS
monolithic-overflow-002-print.html(1/1)100.00%PASS
monolithic-overflow-003-print.html(1/1)100.00%PASS
monolithic-overflow-004-print.html(1/1)100.00%PASS
monolithic-overflow-005-print.html(1/1)100.00%PASS
monolithic-overflow-006-print.html(1/1)100.00%PASS
monolithic-overflow-007-print.html(1/1)100.00%PASS
monolithic-overflow-008-print.html(1/1)100.00%PASS
monolithic-overflow-009-print.html(0/1)0.00%FAIL
monolithic-overflow-010-print.html(0/1)0.00%FAIL
monolithic-overflow-011-print.html(0/1)0.00%FAIL
monolithic-overflow-012-print.html(1/1)100.00%PASS
monolithic-overflow-013-print.html(1/1)100.00%PASS
monolithic-overflow-014-print.html(0/1)0.00%FAIL
monolithic-overflow-015-print.html(1/1)100.00%PASS
monolithic-overflow-016-print.html(0/1)0.00%FAIL
monolithic-overflow-017-print.html(0/1)0.00%FAIL
monolithic-overflow-018-print.html(1/1)100.00%PASS
monolithic-overflow-019-print.html(1/1)100.00%PASS
monolithic-overflow-020-print.html(1/1)100.00%PASS
monolithic-overflow-021-print.html(1/1)100.00%PASS
monolithic-overflow-022-print.html(1/1)100.00%PASS
monolithic-overflow-023-print.html(0/1)0.00%FAIL
monolithic-overflow-024-print.html(0/1)0.00%FAIL
monolithic-overflow-025-print.html(0/1)0.00%FAIL
monolithic-overflow-026-print.html(1/1)100.00%PASS
monolithic-overflow-027-print.html(1/1)100.00%PASS
monolithic-overflow-028-print.html(1/1)100.00%PASS
monolithic-overflow-029-print.html(1/1)100.00%PASS
monolithic-overflow-030-print.html(0/1)0.00%FAIL
monolithic-overflow-031-print.html(0/1)0.00%FAIL
monolithic-overflow-032-print.tentative.html(1/1)100.00%PASS
page-background-001-print.html(0/1)0.00%FAIL
page-background-002-print.html(0/1)0.00%FAIL
page-background-003-print.html(0/1)0.00%FAIL
page-background-004-print.html(0/1)0.00%FAIL
page-background-005-print.html(0/1)0.00%FAIL
page-background-image-print.html(0/1)0.00%FAIL
page-box-000-print.html(0/1)0.00%FAIL
page-box-001-print.html(0/1)0.00%FAIL
page-box-002-print.html(0/1)0.00%FAIL
page-box-003-print.html(0/1)0.00%FAIL
page-box-004-print.html(0/1)0.00%FAIL
page-box-005-print.html(0/1)0.00%FAIL
page-box-006-print.html(0/1)0.00%FAIL
page-box-007-print.html(0/1)0.00%FAIL
page-box-008-print.html(0/1)0.00%FAIL
page-box-009-print.html(0/1)0.00%FAIL
page-box-010-print.html(0/1)0.00%FAIL
page-box-011-print.html(0/1)0.00%FAIL
page-left-right-001-print.html(0/1)0.00%FAIL
page-left-right-002-print.html(0/1)0.00%FAIL
page-margin-001-print.html(0/1)0.00%FAIL
page-margin-002-print.html(0/1)0.00%FAIL
page-margin-003-print.html(0/1)0.00%FAIL
page-margin-004-print.html(0/1)0.00%FAIL
page-margin-005-print.html(1/1)100.00%PASS
page-margin-006-print.html(1/1)100.00%PASS
page-margin-007-print.html(0/1)0.00%FAIL
page-margin-auto-and-non-zero-print.html(0/1)0.00%FAIL
page-margin-auto-negative-print.tentative.html(0/1)0.00%FAIL
page-margin-auto-print.html(0/1)0.00%FAIL
page-margin-negative-print.tentative.html(0/1)0.00%FAIL
page-name-000-print.html(1/1)100.00%PASS
page-name-001-print.html(1/1)100.00%PASS
page-name-002-print.html(1/1)100.00%PASS
page-name-003-print.html(1/1)100.00%PASS
page-name-abspos-001-print.html(1/1)100.00%PASS
page-name-abspos-002-print.html(1/1)100.00%PASS
page-name-abspos-003-print.html(1/1)100.00%PASS
page-name-and-break-001-print.html(1/1)100.00%PASS
page-name-and-break-002-print.html(1/1)100.00%PASS
page-name-and-break-003-print.html(1/1)100.00%PASS
page-name-and-break-004-print.html(1/1)100.00%PASS
page-name-canvas-001-print.html(1/1)100.00%PASS
page-name-canvas-002-print.html(1/1)100.00%PASS
page-name-canvas-003-print.html(1/1)100.00%PASS
page-name-canvas-004-print.html(1/1)100.00%PASS
page-name-display-none-child-print.html(1/1)100.00%PASS
page-name-fixed-pos-001-print.html(1/1)100.00%PASS
page-name-flex-001-print.html(1/1)100.00%PASS
page-name-flex-002-print.html(1/1)100.00%PASS
page-name-flex-003-print.html(1/1)100.00%PASS
page-name-flex-004-print.html(1/1)100.00%PASS
page-name-float-001-print.html(1/1)100.00%PASS
page-name-float-002-print.html(1/1)100.00%PASS
page-name-img-001-print.html(1/1)100.00%PASS
page-name-img-002-print.html(1/1)100.00%PASS
page-name-img-003-print.html(1/1)100.00%PASS
page-name-img-004-print.html(1/1)100.00%PASS
page-name-inline-block-001-print.html(1/1)100.00%PASS
page-name-inline-block-002-print.html(1/1)100.00%PASS
page-name-inline-block-003-print.html(1/1)100.00%PASS
page-name-margin-001-print.html(0/1)0.00%FAIL
page-name-margin-002-print.html(0/1)0.00%FAIL
page-name-orthogonal-writing-001-print.html(1/1)100.00%PASS
page-name-orthogonal-writing-002-print.html(0/1)0.00%FAIL
page-name-orthogonal-writing-003-print.html(1/1)100.00%PASS
page-name-orthogonal-writing-004-print.html(1/1)100.00%PASS
page-name-propagated-001-print.html(1/1)100.00%PASS
page-name-propagated-002-print.html(1/1)100.00%PASS
page-name-propagated-003-print.html(1/1)100.00%PASS
page-name-propagated-004-print.html(1/1)100.00%PASS
page-name-propagated-005-print.html(1/1)100.00%PASS
page-name-propagated-006-print.html(1/1)100.00%PASS
page-name-propagated-007-print.html(1/1)100.00%PASS
page-name-propagated-008-print.html(1/1)100.00%PASS
page-name-propagated-009-print.html(1/1)100.00%PASS
page-name-siblings-001-print.html(1/1)100.00%PASS
page-name-siblings-002-print.html(1/1)100.00%PASS
page-name-siblings-003-print.html(1/1)100.00%PASS
page-name-siblings-004-print.html(1/1)100.00%PASS
page-name-siblings-005-print.html(1/1)100.00%PASS
page-name-table-001-print.html(1/1)100.00%PASS
page-name-unnamed-trailing-001-print.html(1/1)100.00%PASS
page-name-zero-height-001-print.html(1/1)100.00%PASS
page-orientation-on-landscape-001-print.html(0/1)0.00%FAIL
page-orientation-on-portrait-001-print.html(0/1)0.00%FAIL
page-orientation-on-portrait-002-print.html(1/1)100.00%PASS
page-orientation-on-portrait-003-print.html(1/1)100.00%PASS
page-orientation-on-square-001-print.html(0/1)0.00%FAIL
page-orientation.tentative.html(1/11)9.09%PASS
page-rule-declarations-000.html(0/23)0.00%FAIL
page-rule-declarations-001.html(0/5)0.00%FAIL
page-rule-declarations-002.html(4/7)57.14%FAIL
page-rule-declarations-003.html(0/11)0.00%FAIL
page-rule-declarations-004.html(0/13)0.00%FAIL
page-rule-specificity-001-print.html(0/1)0.00%FAIL
page-rule-specificity-002-print.html(0/1)0.00%FAIL
page-rule-specificity-003-print.html(0/1)0.00%FAIL
page-size-001-print.html(0/1)0.00%FAIL
page-size-002-print.html(0/1)0.00%FAIL
page-size-003-print.html(0/1)0.00%FAIL
page-size-004-print.html(0/1)0.00%FAIL
page-size-005-print.html(0/1)0.00%FAIL
page-size-006-print.html(0/1)0.00%FAIL
page-size-007-print.html(0/1)0.00%FAIL
page-size-008-print.html(0/1)0.00%FAIL
page-size-009-print.html(0/1)0.00%FAIL
page-size-010-print.html(0/1)0.00%FAIL
page-size-011-print.html(1/1)100.00%PASS
page-size-012-print.html(0/1)0.00%FAIL
page-size-013-print.html(1/1)100.00%PASS
page-size-014-print.html(1/1)100.00%PASS
page-size-015-print.tentative.html(1/1)100.00%PASS
page-size-016-print.tentative.html(0/1)0.00%FAIL
page-size-017-print.tentative.html(0/1)0.00%FAIL
page-visibility-hidden-001-print.html(1/1)100.00%PASS
pseudo-first-margin-001-print.html(0/1)0.00%FAIL
pseudo-first-margin-002-print.html(0/1)0.00%FAIL
pseudo-first-margin-003-print.html(0/1)0.00%FAIL
pseudo-first-margin-004-print.html(0/1)0.00%FAIL
remote-origin-iframe-print.html(0/1)0.00%FAIL
root-element-display-none-print.html(1/1)100.00%PASS
subpixel-page-size-001-print.html(0/1)0.00%FAIL
subpixel-page-size-002-print.html(0/1)0.00%FAIL
trailing-declaration-crash.html(1/1)100.00%PASS