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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:
1093b86 wpt: skip non-UTF-8 test files instead of crashing (#659) (2026-08-09)

wpt / css / mediaqueries

AreaInterop ScoreTestsTest %SubtestsSubtest %
Total74.50%(44/59)74.58%(44/59)74.58%
TestSubtestsSubtest %Status
aspect-ratio-001.html(1/1)100.00%PASS
aspect-ratio-002.html(1/1)100.00%PASS
aspect-ratio-003.html(1/1)100.00%PASS
aspect-ratio-004.html(1/1)100.00%PASS
aspect-ratio-005.html(1/1)100.00%PASS
aspect-ratio-006.html(1/1)100.00%PASS
at-custom-media-basic.html(0/1)0.00%FAIL
device-aspect-ratio-002.html(0/1)0.00%FAIL
device-aspect-ratio-003.html(0/1)0.00%FAIL
device-aspect-ratio-004.html(1/1)100.00%PASS
device-aspect-ratio-006.html(1/1)100.00%PASS
duplicate-media-stylesheet-crash.html(1/1)100.00%PASS
min-width-001.xht(1/1)100.00%PASS
min-width-tables-001.html(0/1)0.00%FAIL
mq-calc-001.html(1/1)100.00%PASS
mq-calc-002.html(1/1)100.00%PASS
mq-calc-003.html(1/1)100.00%PASS
mq-calc-004.html(1/1)100.00%PASS
mq-calc-005.html(1/1)100.00%PASS
mq-calc-006.html(1/1)100.00%PASS
mq-calc-007.html(1/1)100.00%PASS
mq-calc-008.html(1/1)100.00%PASS
mq-calc-resolution.html(1/1)100.00%PASS
mq-calc-sign-function-001.html(1/1)100.00%PASS
mq-calc-sign-function-002.html(1/1)100.00%PASS
mq-calc-sign-function-003.html(1/1)100.00%PASS
mq-calc-sign-function-004.html(1/1)100.00%PASS
mq-calc-sign-function-005.html(0/1)0.00%FAIL
mq-calc-sign-function-006.html(1/1)100.00%PASS
mq-case-insensitive-001.html(1/1)100.00%PASS
mq-deprecated-001.html(1/1)100.00%PASS
mq-gamut-001.html(0/1)0.00%FAIL
mq-gamut-002.html(0/1)0.00%FAIL
mq-gamut-003.html(1/1)100.00%PASS
mq-gamut-004.html(0/1)0.00%FAIL
mq-gamut-005.html(1/1)100.00%PASS
mq-invalid-media-type-001.html(1/1)100.00%PASS
mq-invalid-media-type-002.html(1/1)100.00%PASS
mq-invalid-media-type-003.html(1/1)100.00%PASS
mq-invalid-media-type-004.html(1/1)100.00%PASS
mq-invalid-media-type-006.html(1/1)100.00%PASS
mq-invalid-media-type-layer-001.html(1/1)100.00%PASS
mq-negative-range-001.html(0/1)0.00%FAIL
mq-negative-range-002.html(0/1)0.00%FAIL
mq-range-001.html(1/1)100.00%PASS
negation-001.html(0/1)0.00%FAIL
negation-002.html(0/1)0.00%FAIL
prefers-color-scheme-svg-as-image.html(0/1)0.00%FAIL
prefers-color-scheme-svg-image-normal-with-meta-dark.html(1/1)100.00%PASS
prefers-color-scheme-svg-image-normal-with-meta-light.html(1/1)100.00%PASS
prefers-color-scheme-svg-image-normal.html(1/1)100.00%PASS
prefers-color-scheme-svg-image.html(1/1)100.00%PASS
relative-units-001.html(1/1)100.00%PASS
relative-units-002.html(1/1)100.00%PASS
relative-units-003.html(1/1)100.00%PASS
relative-units-004.html(1/1)100.00%PASS
scripting-print-noscript.html(1/1)100.00%PASS
scripting-print-script.html(0/1)0.00%FAIL
viewport-script-dynamic.html(0/1)0.00%FAIL