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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 / box-display

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/box-display

Data from commit:
89e5e61 Implement `text-align-last` (#998) (2026-10-01)

AreaInterop ScoreTestsTest %SubtestsSubtest %
Total83.33%(100/120)83.33%(100/120)83.33%
TestSubtestsSubtest %Status
anonymous-box-generation-001.xht(1/1)100.00%PASS
anonymous-boxes-inheritance-001.xht(1/1)100.00%PASS
anonymous-inline-whitespace-001.xht(1/1)100.00%PASS
block-in-inline-001.xht(1/1)100.00%PASS
block-in-inline-002.xht(0/1)0.00%FAIL
block-in-inline-003.xht(0/1)0.00%FAIL
block-in-inline-007.xht(1/1)100.00%PASS
block-in-inline-008.xht(1/1)100.00%PASS
block-in-inline-at-start-with-margin-top-collapses-with-parent.html(1/1)100.00%PASS
block-in-inline-followed-by-empty-span.html(1/1)100.00%PASS
block-in-inline-followed-by-line-break-and-text.html(1/1)100.00%PASS
block-in-inline-large-margin-bottom.html(1/1)100.00%PASS
block-in-inline-margin-bottom-with-trailing-block.html(1/1)100.00%PASS
block-in-inline-margin-collapses-through-intervening-float.html(1/1)100.00%PASS
block-in-inline-margin-collapses-through-multiple-floats.html(1/1)100.00%PASS
block-in-inline-margin-collapses-with-parent-bottom.html(1/1)100.00%PASS
block-in-inline-margin-with-leading-and-trailing-text.html(1/1)100.00%PASS
block-in-inline-margin-with-leading-text.html(1/1)100.00%PASS
block-in-inline-margin-with-line-break-then-block-in-inline.html(1/1)100.00%PASS
block-in-inline-margin-with-multi-line-text-after.html(1/1)100.00%PASS
block-in-inline-margin-with-multi-line-text-before.html(1/1)100.00%PASS
block-in-inline-margin-with-text-then-block-in-inline.html(1/1)100.00%PASS
block-in-inline-margins-collapse-with-trailing-block.html(1/1)100.00%PASS
block-in-inline-negative-margin-bottom-with-trailing-block.html(1/1)100.00%PASS
block-in-inline-negative-margin-with-intervening-float.html(1/1)100.00%PASS
block-in-inline-negative-mb-collapses-with-positive-mt.html(1/1)100.00%PASS
block-in-inline-relpos-001.xht(0/1)0.00%FAIL
block-in-inline-relpos-002.xht(0/1)0.00%FAIL
block-in-inline-self-collapsing-only-child.html(1/1)100.00%PASS
block-in-inline-vertical-margins-on-span-ignored.html(0/1)0.00%FAIL
block-in-inline-with-padded-parent.html(1/1)100.00%PASS
block-in-inline-zero-height-margin-collapse.html(1/1)100.00%PASS
block-in-inlines-in-different-spans-margin-collapse.html(1/1)100.00%PASS
box-generation-001.xht(0/1)0.00%FAIL
box-generation-002.xht(0/1)0.00%FAIL
containing-block-001.xht(1/1)100.00%PASS
containing-block-002.xht(1/1)100.00%PASS
containing-block-003.xht(1/1)100.00%PASS
containing-block-004.xht(1/1)100.00%PASS
containing-block-005.xht(1/1)100.00%PASS
containing-block-006.xht(1/1)100.00%PASS
containing-block-007.xht(1/1)100.00%PASS
containing-block-008.xht(1/1)100.00%PASS
containing-block-009.xht(1/1)100.00%PASS
containing-block-010.xht(1/1)100.00%PASS
containing-block-019.xht(1/1)100.00%PASS
containing-block-020.xht(1/1)100.00%PASS
containing-block-021.xht(1/1)100.00%PASS
containing-block-022.xht(1/1)100.00%PASS
containing-block-023.xht(1/1)100.00%PASS
containing-block-026.xht(1/1)100.00%PASS
containing-block-027.xht(1/1)100.00%PASS
containing-block-028.xht(0/1)0.00%FAIL
containing-block-029.xht(1/1)100.00%PASS
containing-block-030.xht(1/1)100.00%PASS
delete-block-in-inlines-beginning-001.xht(1/1)100.00%PASS
delete-block-in-inlines-end-001.xht(1/1)100.00%PASS
delete-block-in-inlines-middle-001.xht(1/1)100.00%PASS
delete-inline-in-blocks-beginning-001.xht(1/1)100.00%PASS
delete-inline-in-blocks-end-001.xht(1/1)100.00%PASS
delete-inline-in-blocks-middle-001.xht(1/1)100.00%PASS
delete-inline-in-blocks-middle-002.xht(1/1)100.00%PASS
delete-inline-in-blocks-middle-003.xht(1/1)100.00%PASS
descendant-display-none-001.xht(1/1)100.00%PASS
descendant-display-override-001.xht(1/1)100.00%PASS
display-001.xht(1/1)100.00%PASS
display-002.xht(1/1)100.00%PASS
display-005.xht(0/1)0.00%FAIL
display-006.xht(0/1)0.00%FAIL
display-007.xht(0/1)0.00%FAIL
display-008.xht(0/1)0.00%FAIL
display-009.xht(0/1)0.00%FAIL
display-010.xht(1/1)100.00%PASS
display-011.xht(1/1)100.00%PASS
display-012.xht(0/1)0.00%FAIL
display-013.xht(0/1)0.00%FAIL
display-014.xht(0/1)0.00%FAIL
display-015.xht(0/1)0.00%FAIL
display-016.xht(1/1)100.00%PASS
display-017.xht(1/1)100.00%PASS
display-018.xht(1/1)100.00%PASS
display-change-001.xht(0/1)0.00%FAIL
display-none-001.xht(1/1)100.00%PASS
display-none-002.xht(1/1)100.00%PASS
display-none-003.xht(1/1)100.00%PASS
inline-block-after-block-in-inline-with-intervening-float.html(1/1)100.00%PASS
inline-text-after-block-in-inline-margin.html(1/1)100.00%PASS
inline-text-after-block-in-inline-with-intervening-float.html(1/1)100.00%PASS
insert-block-in-blocks-n-inlines-begin-001.xht(1/1)100.00%PASS
insert-block-in-blocks-n-inlines-begin-002.xht(1/1)100.00%PASS
insert-block-in-blocks-n-inlines-begin-003.xht(1/1)100.00%PASS
insert-block-in-blocks-n-inlines-end-001.xht(1/1)100.00%PASS
insert-block-in-blocks-n-inlines-end-002.xht(1/1)100.00%PASS
insert-block-in-blocks-n-inlines-end-003.xht(1/1)100.00%PASS
insert-block-in-blocks-n-inlines-middle-001.xht(1/1)100.00%PASS
insert-block-in-blocks-n-inlines-middle-002.xht(1/1)100.00%PASS
insert-block-in-blocks-n-inlines-middle-003.xht(1/1)100.00%PASS
insert-block-in-inlines-beginning-001.xht(1/1)100.00%PASS
insert-block-in-inlines-end-001.xht(1/1)100.00%PASS
insert-block-in-inlines-middle-001.xht(1/1)100.00%PASS
insert-inline-in-blocks-beginning-001.xht(1/1)100.00%PASS
insert-inline-in-blocks-end-001.xht(1/1)100.00%PASS
insert-inline-in-blocks-middle-001.xht(1/1)100.00%PASS
insert-inline-in-blocks-middle-002.xht(1/1)100.00%PASS
insert-inline-in-blocks-n-inlines-begin-001.xht(1/1)100.00%PASS
insert-inline-in-blocks-n-inlines-begin-002.xht(1/1)100.00%PASS
insert-inline-in-blocks-n-inlines-begin-003.xht(1/1)100.00%PASS
insert-inline-in-blocks-n-inlines-end-001.xht(1/1)100.00%PASS
insert-inline-in-blocks-n-inlines-end-002.xht(1/1)100.00%PASS
insert-inline-in-blocks-n-inlines-end-003.xht(1/1)100.00%PASS
insert-inline-in-blocks-n-inlines-middle-001.xht(1/1)100.00%PASS
insert-inline-in-blocks-n-inlines-middle-002.xht(1/1)100.00%PASS
insert-inline-in-blocks-n-inlines-middle-003.xht(1/1)100.00%PASS
multiple-block-in-inlines-margins-collapse.html(1/1)100.00%PASS
nested-spans-with-block-in-inline-margin.html(1/1)100.00%PASS
root-box-002.xht(0/1)0.00%FAIL
root-box-003.xht(1/1)100.00%PASS
root-canvas-001.xht(0/1)0.00%FAIL
three-block-in-inlines-cascading-margins.html(1/1)100.00%PASS
two-block-in-inlines-with-text-between.html(1/1)100.00%PASS