Click here to download the Blitz Browser!

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 / css-tables

AreaInterop ScoreTestsTest %SubtestsSubtest %
Total37.30%(78/225)34.67%(169/570)29.65%
crashtests100.00%(18/18)100.00%(18/18)100.00%
height-distribution42.80%(6/14)42.86%(6/14)42.86%
paint50.00%(3/6)50.00%(3/6)50.00%
tentative13.50%(1/47)2.13%(80/346)23.12%
TestSubtestsSubtest %Status
absolute-tables-001.html(8/8)100.00%PASS
absolute-tables-002.html(0/4)0.00%FAIL
absolute-tables-003.html(0/4)0.00%FAIL
absolute-tables-004.html(0/4)0.00%FAIL
absolute-tables-005.html(2/4)50.00%FAIL
absolute-tables-006.html(0/1)0.00%FAIL
absolute-tables-007.html(1/1)100.00%PASS
absolute-tables-008.tentative.html(1/1)100.00%PASS
absolute-tables-009.tentative.html(0/1)0.00%FAIL
absolute-tables-010.tentative.html(0/1)0.00%FAIL
absolute-tables-011.tentative.html(1/1)100.00%PASS
absolute-tables-012.html(1/1)100.00%PASS
absolute-tables-013.html(1/1)100.00%PASS
absolute-tables-014.html(1/1)100.00%PASS
absolute-tables-015.html(1/1)100.00%PASS
absolute-tables-016.html(0/1)0.00%FAIL
abspos-container-change-dynamic-001.html(0/1)0.00%FAIL
anonymous-table-cell-margin-collapsing.html(0/1)0.00%FAIL
anonymous-table-ws-001.html(0/1)0.00%FAIL
auto-layout-calc-width-001.html(0/1)0.00%FAIL
background-clip-001.html(0/1)0.00%FAIL
baseline-empty-cell-001.html(1/1)100.00%PASS
baseline-vertical.html(0/1)0.00%FAIL
border-collapse-dynamic-col-001.html(0/1)0.00%FAIL
border-collapse-dynamic-oof.html(0/1)0.00%FAIL
border-collapse-dynamic-section.html(0/1)0.00%FAIL
border-collapse-empty-cell.html(1/1)100.00%PASS
border-collapse-rowspan-cell.html(1/1)100.00%PASS
border-conflict-resolution.html(0/1)0.00%FAIL
box-shadow-001.html(0/1)0.00%FAIL
calc-percent-plus-0px-auto.html(1/1)100.00%PASS
calc-percent-plus-0px-fixed.html(1/1)100.00%PASS
caption-relative-positioning.html(0/1)0.00%FAIL
col-definite-max-size-001.html(1/1)100.00%PASS
col-definite-min-size-001.html(1/1)100.00%PASS
col-definite-size-001.html(1/1)100.00%PASS
collapsed-border-color-change-with-compositing.html(0/1)0.00%FAIL
collapsed-border-large-rowgroup-001.html(0/1)0.00%FAIL
collapsed-border-large-rowgroup-002.html(0/1)0.00%FAIL
collapsed-border-paint-phase-001.html(0/1)0.00%FAIL
collapsed-border-paint-phase-002.html(0/1)0.00%FAIL
collapsed-border-partial-invalidation-001.html(0/1)0.00%FAIL
collapsed-border-partial-invalidation-002.html(0/1)0.00%FAIL
collapsed-border-partial-invalidation-003.html(0/1)0.00%FAIL
collapsed-border-positioned-tr-td.html(1/1)100.00%PASS
collapsed-border-remove-cell.html(1/1)100.00%PASS
collapsed-border-remove-row-group.html(0/1)0.00%FAIL
collapsed-border-sideways-rl-rtl-overflow.html(1/1)100.00%PASS
collapsed-border-vertical-lr-rtl-overflow.html(1/1)100.00%PASS
collapsed-border-vertical-rtl-overflow.html(1/1)100.00%PASS
colspan-001.html(0/5)0.00%FAIL
colspan-002.html(0/5)0.00%FAIL
colspan-003.html(0/5)0.00%FAIL
colspan-004.html(0/1)0.00%FAIL
column-track-merging.html(3/13)23.08%FAIL
display-contents-001.html(0/1)0.00%FAIL
display-contents-002.html(0/1)0.00%FAIL
display-contents-003.html(0/1)0.00%FAIL
dynamic-rowspan-change.html(0/2)0.00%FAIL
dynamic-table-cell-height.html(0/1)0.00%FAIL
empty-table-height.html(1/1)100.00%PASS
fixed-layout-calc-width-001.html(0/1)0.00%FAIL
fixed-layout-excess-width-distribution-001.html(0/1)0.00%FAIL
fixup-dynamic-anonymous-inline-table-001.html(0/1)0.00%FAIL
fixup-dynamic-anonymous-inline-table-002.html(0/1)0.00%FAIL
fixup-dynamic-anonymous-inline-table-003.html(0/1)0.00%FAIL
fixup-dynamic-anonymous-table-001.html(0/1)0.00%FAIL
fractional-percent-width.html(0/3)0.00%FAIL
html-display-table.html(0/1)0.00%FAIL
iframe-display-table-content-insertion.html(0/1)0.00%FAIL
insert-after-col.html(0/1)0.00%CRASH
insert-after-colgroup.html(0/1)0.00%FAIL
internal-containing-block-001.html(0/1)0.00%FAIL
max-height-table.html(0/1)0.00%FAIL
min-height-table-2.html(1/1)100.00%PASS
min-height-table.html(1/1)100.00%PASS
min-max-size-table-content-box.html(0/1)0.00%FAIL
multicol-table-collapsed-border-crash.html(1/1)100.00%PASS
multicol-table-crash.html(1/1)100.00%PASS
out-of-order-elements-collapsed-border.html(1/1)100.00%PASS
percent-height-overflow-auto-in-restricted-block-size-cell.html(0/1)0.00%FAIL
percent-height-overflow-auto-in-unrestricted-block-size-cell.tentative.html(0/1)0.00%FAIL
percent-height-replaced-in-percent-cell-002.html(1/1)100.00%PASS
percent-height-replaced-in-percent-cell-003.html(0/1)0.00%FAIL
percent-height-replaced-in-percent-cell-004.html(0/1)0.00%FAIL
percent-height-replaced-in-percent-cell.tentative.html(1/1)100.00%PASS
percent-height-table-cell-child.html(0/1)0.00%FAIL
percent-width-cell-dynamic.html(0/1)0.00%FAIL
percent-width-ignored-001.tentative.html(0/1)0.00%FAIL
percent-width-ignored-002.tentative.html(0/1)0.00%FAIL
percent-width-ignored-003.tentative.html(0/1)0.00%FAIL
percentages-grandchildren-quirks-mode-001.html(0/1)0.00%FAIL
percentages-grandchildren-quirks-mode-002.html(0/1)0.00%FAIL
remove-caption-from-anon-table.html(0/1)0.00%FAIL
remove-colgroup-from-anon-table.html(1/1)100.00%PASS
row-group-margin-border-padding.html(1/1)100.00%PASS
row-group-order.html(1/1)100.00%PASS
row-margin-border-padding.html(1/1)100.00%PASS
rowspan-cell-border-after-color.html(0/1)0.00%FAIL
rules-groups.html(0/1)0.00%FAIL
subpixel-collapsed-borders-001.html(0/1)0.00%FAIL
subpixel-collapsed-borders-002.html(0/1)0.00%FAIL
subpixel-collapsed-borders-003.html(0/1)0.00%FAIL
subpixel-table-cell-height-001.html(1/1)100.00%PASS
subpixel-table-cell-width-001.html(1/1)100.00%PASS
subpixel-table-cell-width-002.html(1/1)100.00%PASS
subpixel-table-width-001.html(1/1)100.00%PASS
table-as-item-cell-percentage-001.html(0/1)0.00%FAIL
table-as-item-cell-percentage-002.html(1/1)100.00%PASS
table-as-item-cell-percentage-003.html(0/1)0.00%FAIL
table-as-item-cell-percentage-004.html(0/1)0.00%FAIL
table-caption-after-crash.html(1/1)100.00%PASS
table-cell-baseline-static-position.html(1/1)100.00%PASS
table-cell-child-overflow-measure.html(1/1)100.00%PASS
table-cell-inline-size-box-sizing-quirks.html(1/1)100.00%PASS
table-cell-overflow-auto-scrolled.html(1/1)100.00%PASS
table-cell-overflow-auto.html(1/1)100.00%PASS
table-cell-overflow-explicit-height-001.html(0/1)0.00%FAIL
table-cell-overflow-explicit-height-002.html(0/1)0.00%FAIL
table-cell-width-0.html(0/1)0.00%FAIL
table-colspan-percent-auto.html(1/1)100.00%PASS
table-has-box-sizing-border-box-001.html(1/1)100.00%PASS
table-has-box-sizing-border-box-002.html(1/1)100.00%PASS
table-intrinsic-size-001.html(0/1)0.00%FAIL
table-intrinsic-size-002.html(0/1)0.00%FAIL
table-intrinsic-size-003.html(0/1)0.00%FAIL
table-intrinsic-size-004.html(0/1)0.00%FAIL
table-row-group-color-inheritance-001.html(0/1)0.00%FAIL
table-row-group-nested-anonymous-001.html(1/1)100.00%PASS
table_grid_size_col_colspan.html(0/1)0.00%FAIL
th-text-align.html(1/1)100.00%PASS
toggle-row-display-property-001.html(0/1)0.00%FAIL
visibility-collapse-border-spacing-001.html(0/1)0.00%FAIL
visibility-collapse-border-spacing-002.html(0/1)0.00%FAIL
visibility-collapse-colspan-003.html(0/1)0.00%FAIL
visibility-collapse-rowspan-005.html(0/1)0.00%FAIL
visibility-hidden-collapsed-borders.html(1/1)100.00%PASS
whitespace-001.html(0/1)0.00%FAIL
zero-rowspan-001.html(0/1)0.00%FAIL
zero-rowspan-002.html(0/1)0.00%FAIL