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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:
708eb61 WPT runner: support mismatch reftests and multiple rel=match links (#665) (2026-08-09)

wpt / css / css-writing-modes / forms

AreaInterop ScoreTestsTest %SubtestsSubtest %
Total3.30%(2/60)3.33%(2/60)3.33%
TestSubtestsSubtest %Status
button-appearance-native-horizontal.optional.html(0/1)0.00%FAIL
button-appearance-native-vertical.optional.html(0/1)0.00%FAIL
button-appearance-none-horizontal.optional.html(0/1)0.00%FAIL
button-appearance-none-vertical.optional.html(0/1)0.00%FAIL
checkbox-appearance-native-vertical-lr-baseline.optional.html(0/1)0.00%FAIL
checkbox-appearance-native-vertical-rl-baseline.optional.html(0/1)0.00%FAIL
color-input-appearance-native-horizontal.optional.html(0/1)0.00%FAIL
color-input-appearance-native-vertical.optional.html(0/1)0.00%FAIL
color-input-appearance-none-horizontal.optional.html(0/1)0.00%FAIL
color-input-appearance-none-vertical.optional.html(0/1)0.00%FAIL
date-input-appearance-native-horizontal.optional.html(0/1)0.00%FAIL
date-input-appearance-native-vertical.optional.html(0/1)0.00%FAIL
date-input-appearance-none-horizontal.optional.html(0/1)0.00%FAIL
date-input-appearance-none-vertical.optional.html(0/1)0.00%FAIL
file-input-horizontal.optional.html(0/1)0.00%FAIL
file-input-vertical-rtl.optional.html(0/1)0.00%FAIL
file-input-vertical.optional.html(0/1)0.00%FAIL
input-range-zero-inline-size.html(0/1)0.00%FAIL
meter-appearance-native-horizontal-rtl.optional.html(0/1)0.00%FAIL
meter-appearance-native-horizontal.optional.html(0/1)0.00%FAIL
meter-appearance-native-vertical-rtl.optional.html(0/1)0.00%FAIL
meter-appearance-native-vertical.optional.html(0/1)0.00%FAIL
number-input-vertical-overflow.html(1/1)100.00%PASS
progress-appearance-native-horizontal-rtl.optional.html(1/1)100.00%PASS
progress-appearance-native-horizontal.optional.html(0/1)0.00%FAIL
progress-appearance-native-vertical-rtl.optional.html(0/1)0.00%FAIL
progress-appearance-native-vertical.optional.html(0/1)0.00%FAIL
progress-appearance-none-horizontal-rtl.optional.html(0/1)0.00%FAIL
progress-appearance-none-horizontal.optional.html(0/1)0.00%FAIL
progress-appearance-none-vertical-rtl.optional.html(0/1)0.00%FAIL
progress-appearance-none-vertical.optional.html(0/1)0.00%FAIL
radio-appearance-native-vertical-lr-baseline.optional.html(0/1)0.00%FAIL
radio-appearance-native-vertical-rl-baseline.optional.html(0/1)0.00%FAIL
range-input-appearance-native-horizontal-rtl.optional.html(0/1)0.00%FAIL
range-input-appearance-native-horizontal.optional.html(0/1)0.00%FAIL
range-input-appearance-native-vertical-rtl.optional.html(0/1)0.00%FAIL
range-input-appearance-native-vertical.optional.html(0/1)0.00%FAIL
range-input-appearance-none-horizontal-rtl.optional.html(0/1)0.00%FAIL
range-input-appearance-none-horizontal.optional.html(0/1)0.00%FAIL
range-input-appearance-none-vertical-rtl.optional.html(0/1)0.00%FAIL
range-input-appearance-none-vertical.optional.html(0/1)0.00%FAIL
range-input-vertical-ltr-painting.html(0/1)0.00%FAIL
range-input-vertical-rtl-painting.html(0/1)0.00%FAIL
select-appearance-native-horizontal.optional.html(0/1)0.00%FAIL
select-appearance-native-vertical.optional.html(0/1)0.00%FAIL
select-appearance-none-horizontal.optional.html(0/1)0.00%FAIL
select-appearance-none-vertical-lr.optional.html(0/1)0.00%FAIL
select-appearance-none-vertical-rl.optional.html(0/1)0.00%FAIL
select-multiple-appearance-native-horizontal.optional.html(0/1)0.00%FAIL
select-multiple-appearance-native-vlr.optional.html(0/1)0.00%FAIL
select-multiple-appearance-native-vrl.optional.html(0/1)0.00%FAIL
select-multiple-appearance-none-horizontal.optional.html(0/1)0.00%FAIL
select-multiple-appearance-none-vlr.optional.html(0/1)0.00%FAIL
select-multiple-appearance-none-vrl.optional.html(0/1)0.00%FAIL
textarea-appearance-native-horizontal.optional.html(0/1)0.00%FAIL
textarea-appearance-native-vlr.optional.html(0/1)0.00%FAIL
textarea-appearance-native-vrl.optional.html(0/1)0.00%FAIL
textarea-appearance-none-horizontal.optional.html(0/1)0.00%FAIL
textarea-appearance-none-vlr.optional.html(0/1)0.00%FAIL
textarea-appearance-none-vrl.optional.html(0/1)0.00%FAIL