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WPT

This page compares scores on the Web Platform Tests across web engines, using the latest master runs from wpt.fyi and Blitz's own test runner.

wpt / css / css-ui

Spec: CSS User Interface ↗

Runs: Chrome 158.0.8110.0 (wpt@d6615bd69, 2026-10-18) | Firefox 160.0a1 (wpt@b58866519, 2026-10-18) | Safari 254 preview (wpt@470a7adf8, 2026-10-18) | Ladybird 1.0-44fe0 (wpt@850b36a56, 2026-10-18) | Servo Servo 0.7 (wpt@df642c414, 2026-10-17) | Blitz fb8d6c15e (wpt@cd1d8aa5b, 2026-10-17)

Score history

Percentage of subtests passing over time, one master run per day. Every engine's percentage is relative to the same denominator: the total number of subtests known to any engine in the latest runs (so lines are not distorted by tests being added to WPT, and an engine that skips tests is not flattered for it).

1 month3 months6 months1 year2 years4 yearsAll time
0%20%40%60%80%100%Nov 2025Dec 2025Jan 2026Feb 2026Mar 2026Apr 2026May 2026Jun 2026Jul 2026Aug 2026Sep 2026Oct 2026ChromeFirefoxSafariLadybirdServoBlitz

Sort: alphabetical | by subtest count

AreaChromeFirefoxSafariLadybirdServoBlitz
Total97.4%3340/342993.7%3216/342993.9%3221/342989.9%3083/342966.2%2272/342977.1%2647/3429
animation99.9%1008/100999.3%1002/100999.4%1003/100998.8%997/100954.1%546/100956.9%575/1009
compute-kind-widget-generated100.0%802/802100.0%802/802100.0%802/80293.2%748/802100.0%802/802100.0%802/802
crashtests100.0%4/4100.0%4/4100.0%4/4100.0%4/4100.0%4/4100.0%4/4
parsing89.9%322/35870.3%252/35874.5%267/35869.8%250/35866.7%239/35867.0%240/358
tentative68.7%11/16100.0%16/1668.7%11/1693.7%15/1693.7%15/1681.2%13/16
TestChromeFirefoxSafariLadybirdServoBlitz
Total96.2%1193/124091.9%1140/124091.4%1134/124086.2%1069/124053.7%666/124081.6%1013/1240
accent-color-checkbox-checked-001.htmlPASSPASSPASSPASSFAILFAIL
accent-color-computed.html7/77/77/76/70/70/7
accent-color-invalidation-currentcolor.htmlPASSPASSPASSPASSFAILFAIL
accent-color-keyword-animation.html0/30/30/30/30/30/3
accent-color-keyword-cyclic.html0/40/40/40/40/40/4
accent-color-keyword-resolution.html0/60/60/60/60/60/6
accent-color-parent-currentcolor.htmlPASSPASSPASSPASSFAILPASS
accent-color-parsing.html10/1010/1010/1010/101/101/10
accent-color-radio-checked-001.htmlPASSPASSPASSPASSFAILFAIL
accent-color-text-keyword-resolution.html1/31/32/32/31/31/3
accent-color-visited.htmlPASSPASSPASSPASSPASSPASS
appearance-auto-001.htmlPASSPASSPASSPASSPASSPASS
appearance-auto-details-list-item.htmlPASSPASSPASSPASSPASSPASS
appearance-auto-input-non-widget-001.htmlPASSPASSPASSPASSPASSPASS
appearance-auto-non-html-namespace-001.htmlPASSPASSPASSFAILFAILPASS
appearance-button-001.htmlPASSPASSPASSPASSPASSPASS
appearance-checkbox-001.htmlPASSPASSPASSPASSPASSPASS
appearance-cssom-001.html?exclude=Invalid41/4141/4141/4141/4115/4141/41
appearance-cssom-001.html?include=Invalid300/300300/300290/300294/3000/300300/300
appearance-display-001.html525/525525/525525/525475/525475/525475/525
appearance-initial-value-001.html4/44/44/44/40/44/4
appearance-invalidate-author-styling-001-ref.htmlPASSPASSPASSFAILFAILFAIL
appearance-invalidate-author-styling-001.htmlPASSPASSPASSPASSPASSPASS
appearance-listbox-001.htmlPASSPASSPASSPASSPASSPASS
appearance-menulist-001.htmlPASSPASSPASSPASSPASSPASS
appearance-menulist-button-001.htmlPASSPASSPASSPASSPASSPASS
appearance-menulist-button-002.tentative.htmlPASSPASSPASSFAILFAILFAIL
appearance-meter-001.htmlPASSPASSPASSPASSPASSPASS
appearance-parsing.html3/33/33/33/30/33/3
appearance-progress-bar-001.htmlPASSPASSPASSPASSPASSPASS
appearance-progress-bar-002.htmlPASSPASSPASSPASSPASSPASS
appearance-property.html5/55/55/55/51/55/5
appearance-radio-001.htmlPASSPASSPASSPASSPASSPASS
appearance-revert-001.tentative.htmlPASSPASSPASSPASSFAILPASS
appearance-searchfield-001.htmlPASSPASSPASSPASSPASSPASS
appearance-serialization.html3/33/33/33/30/33/3
appearance-textarea-001.htmlPASSPASSPASSPASSPASSPASS
appearance-textfield-001.htmlPASSPASSPASSPASSFAILPASS
box-sizing-001.htmlPASSPASSPASSPASSPASSPASS
box-sizing-003.htmlPASSPASSPASSFAILPASSPASS
box-sizing-005.htmlPASSPASSPASSPASSPASSPASS
box-sizing-007.htmlPASSPASSPASSFAILFAILFAIL
box-sizing-008.htmlPASSPASSPASSPASSFAILFAIL
box-sizing-009.htmlPASSPASSPASSFAILFAILFAIL
box-sizing-010.htmlPASSPASSPASSPASSFAILFAIL
box-sizing-011.htmlPASSPASSPASSPASSFAILFAIL
box-sizing-012.htmlPASSPASSPASSPASSFAILFAIL
box-sizing-013.htmlPASSPASSPASSPASSFAILFAIL
box-sizing-014.htmlPASSPASSPASSFAILFAILFAIL
box-sizing-015.htmlPASSPASSPASSPASSFAILFAIL
box-sizing-016.htmlPASSPASSPASSFAILFAILFAIL
box-sizing-017.htmlPASSPASSPASSPASSFAILFAIL
box-sizing-018.htmlPASSPASSPASSPASSFAILFAIL
box-sizing-019.htmlPASSPASSPASSFAILFAILFAIL
box-sizing-020.htmlPASSPASSPASSPASSFAILFAIL
box-sizing-021.htmlPASSPASSPASSPASSFAILFAIL
box-sizing-022.htmlPASSPASSPASSPASSFAILFAIL
box-sizing-023.htmlPASSPASSPASSFAILFAILFAIL
box-sizing-024.htmlPASSPASSPASSPASSFAILFAIL
box-sizing-025.htmlPASSPASSPASSPASSFAILFAIL
box-sizing-026.htmlPASSPASSPASSPASSPASSPASS
box-sizing-027.html2/22/22/22/20/22/2
button-author-level-padding-applies.htmlPASSPASSPASSPASSPASSPASS
caret-color-009.html3/33/33/33/33/33/3
caret-color-013.html11/1111/1111/1111/1111/1111/11
caret-color-016.htmlNOT RUNNOT RUNNOT RUNNOT RUNNOT RUNPASS
caret-color-018.htmlPASSPASSPASSPASSFAILFAIL
caret-color-019.htmlPASSPASSPASSPASSFAILFAIL
caret-color-020.htmlPASSPASSPASSPASSFAILFAIL
caret-color-021.htmlPASSPASSPASSPASSPASSPASS
caret-color-bar-shape-text-color.htmlPASSFAILFAILFAILPASSPASS
caret-color-block-shape-text-color-001.htmlPASSFAILFAILFAILFAILFAIL
caret-color-block-shape-text-color-002.htmlPASSFAILFAILFAILFAILFAIL
caret-color-block-shape-text-color-003.htmlPASSFAILFAILFAILFAILFAIL
caret-color-block-shape-text-color-004.htmlPASSFAILFAILFAILFAILFAIL
caret-color-block-shape-text-color-005.htmlPASSFAILFAILFAILFAILFAIL
caret-color-underscore-shape-text-color.htmlPASSFAILFAILFAILPASSPASS
caret-eol-001.htmlPASSPASSPASSPASSFAILFAIL
caret-eol-002.htmlPASSPASSPASSFAILFAILFAIL
caret-eol-003.htmlPASSPASSPASSPASSPASSPASS
caret-eol-004.tentative.htmlFAILPASSFAILFAILFAILFAIL
caret-shape-block-001-rtl-sideways-lr.htmlPASSFAILFAILTIMEOUTTIMEOUTPASS
caret-shape-block-001-rtl-sideways-rl.htmlPASSFAILFAILTIMEOUTTIMEOUTPASS
caret-shape-block-001-rtl-vlr.htmlPASSFAILFAILTIMEOUTTIMEOUTPASS
caret-shape-block-001-rtl-vrl.htmlPASSFAILFAILTIMEOUTTIMEOUTPASS
caret-shape-block-001-rtl.htmlPASSFAILFAILTIMEOUTTIMEOUTPASS
caret-shape-block-001-sideways-lr.htmlPASSFAILFAILTIMEOUTTIMEOUTPASS
caret-shape-block-001-sideways-rl.htmlPASSFAILFAILTIMEOUTTIMEOUTPASS
caret-shape-block-001-vlr.htmlPASSFAILFAILTIMEOUTTIMEOUTPASS
caret-shape-block-001-vrl.htmlPASSFAILFAILTIMEOUTTIMEOUTPASS
caret-shape-block-001.htmlPASSFAILFAILTIMEOUTTIMEOUTPASS
caret-shape-block-002.htmlPASSFAILFAILTIMEOUTTIMEOUTFAIL
caret-shape-block-color-001.htmlPASSFAILFAILFAILFAILFAIL
caret-shape-block-color-002.tentative.htmlPASSFAILFAILFAILFAILFAIL
caret-shape-block-color-003.tentative.htmlPASSFAILFAILFAILFAILFAIL
caret-shape-block-color-004.tentative.htmlPASSFAILFAILFAILFAILFAIL
caret-shape-block-empty-001.htmlPASSFAILFAILFAILFAILFAIL
caret-shape-block-empty-002.htmlPASSFAILFAILFAILFAILFAIL
caret-shape-block-fallback-001.htmlPASSFAILFAILFAILFAILFAIL
caret-shape-block-zoom.htmlPASSFAILFAILFAILFAILFAIL
caret-shape-parsing.html13/135/135/135/135/135/13
caret-shape-underscore-001.htmlPASSFAILFAILFAILFAILFAIL
caret-shape-underscore-empty-001.htmlPASSPASSPASSFAILFAILFAIL
compute-kind-widget-fallback-props-revert-001.htmlPASSPASSPASSPASSPASSPASS
compute-kind-widget-no-fallback-props-001.htmlPASSPASSFAILPASSFAILPASS
cursor-calc-hotspot.html2/44/44/44/43/44/4
inert-attribute-overriding.html4/44/44/44/41/40/4
inheritance.html19/2818/2818/2818/2814/2816/28
interactivity-inert-all.htmlPASSFAILFAILFAILFAILFAIL
interactivity-inert-animated.htmlPASSPASSPASSPASSPASSSKIP
interactivity-inert-click.html2/21/21/21/21/20/2
interactivity-inert-find.html2/32/32/32/30/30/3
interactivity-inert-focus.html2/32/32/32/32/32/3
interactivity-inert-fullscreen-ua.html5/50/50/50/50/50/5
interactivity-inert-html-attribute-ua.html4/40/40/40/40/40/4
interactivity-inert-modal-dialog-ua.html5/50/50/50/50/50/5
native-appearance-disabled-for-value-unset.htmlPASSPASSPASSPASSPASSPASS
neg-outline-offset-border-radius-crash.htmlPASSPASSPASSPASSPASSPASS
negative-outline-offset.htmlPASSPASSFAILPASSPASSFAIL
outline-001.htmlPASSPASSPASSPASSPASSPASS
outline-002.htmlPASSPASSPASSPASSPASSPASS
outline-003.htmlPASSPASSPASSPASSPASSPASS
outline-004.htmlPASSPASSPASSPASSPASSFAIL
outline-005.htmlPASSPASSPASSPASSPASSFAIL
outline-007.htmlPASSPASSPASSPASSPASSFAIL
outline-008.htmlPASSPASSPASSPASSPASSPASS
outline-009.htmlPASSPASSPASSPASSPASSPASS
outline-010.htmlPASSPASSPASSPASSPASSFAIL
outline-011.htmlPASSPASSPASSPASSPASSFAIL
outline-012.htmlPASSPASSPASSPASSPASSFAIL
outline-013.htmlPASSPASSFAILPASSPASSFAIL
outline-014.htmlPASSPASSFAILPASSPASSFAIL
outline-015.htmlPASSPASSFAILPASSPASSFAIL
outline-016.htmlPASSPASSFAILPASSPASSFAIL
outline-017.html3/33/33/33/33/33/3
outline-018.htmlPASSPASSPASSPASSPASSPASS
outline-019.htmlPASSPASSPASSPASSPASSFAIL
outline-020.htmlPASSPASSPASSPASSPASSFAIL
outline-021.htmlPASSPASSPASSPASSPASSPASS
outline-022.htmlPASSFAILPASSPASSPASSFAIL
outline-023.htmlPASSPASSPASSPASSPASSPASS
outline-024.htmlPASSPASSPASSPASSPASSPASS
outline-025.htmlPASSPASSFAILPASSPASSPASS
outline-026.htmlPASSPASSFAILPASSPASSPASS
outline-027.htmlPASSPASSPASSPASSPASSPASS
outline-028.htmlPASSPASSPASSPASSPASSFAIL
outline-auto-dynamic-change.htmlPASSPASSPASSPASSPASSPASS
outline-auto-width-001.htmlPASSPASSPASSPASSPASSPASS
outline-color-001.htmlPASSPASSPASSPASSPASSPASS
outline-color-002.htmlFAILFAILPASSPASSFAILPASS
outline-color-003.htmlFAILFAILPASSPASSFAILPASS
outline-color-004.htmlFAILFAILPASSPASSFAILPASS
outline-dynamic.htmlPASSPASSPASSPASSPASSPASS
outline-negative-offset-composited-scroll.htmlPASSPASSFAILPASSPASSFAIL
outline-offset-001.htmlPASSPASSPASSPASSPASSFAIL
outline-offset-inset-001.htmlFAILFAILPASSFAILFAILPASS
outline-offset-inset-002.htmlFAILFAILPASSFAILFAILPASS
outline-offset-inset-003.htmlFAILFAILPASSFAILFAILPASS
outline-offset-inset-004.htmlFAILFAILPASSFAILFAILPASS
outline-offset-inset-005.htmlFAILFAILPASSFAILFAILPASS
outline-offset-inset-006.htmlFAILFAILPASSFAILFAILFAIL
outline-offset-table-001.htmlPASSPASSPASSPASSPASSFAIL
outline-offset.htmlPASSPASSPASSPASSPASSFAIL
outline-style-011.htmlPASSPASSPASSPASSPASSFAIL
outline-style-012.htmlPASSPASSPASSPASSPASSFAIL
outline-style-013.htmlPASSPASSPASSPASSPASSFAIL
outline-style-014.htmlPASSPASSPASSPASSPASSFAIL
outline-style-inherit.htmlPASSPASSPASSPASSPASSPASS
outline-width-rounding.tentative.html12/1212/1212/1212/1212/1212/12
outline-with-001-crash.htmlPASSPASSPASSPASSPASSPASS
outline-with-padding-001.htmlPASSFAILPASSFAILFAILPASS
pointer-events-no-scrollbars-001.htmlPASSPASSPASSPASSPASSPASS
pointer-events-no-scrollbars-002.htmlPASSPASSPASSPASSPASSPASS
resize-015.htmlNOT RUNNOT RUNNOT RUNNOT RUNNOT RUNSKIP
resize-016.htmlNOT RUNNOT RUNNOT RUNNOT RUNNOT RUNSKIP
resize-017.htmlNOT RUNNOT RUNNOT RUNNOT RUNNOT RUNSKIP
resize-018.htmlNOT RUNNOT RUNNOT RUNNOT RUNNOT RUNSKIP
resize-change-margin.htmlPASSPASSPASSPASSPASSPASS
resize-child-will-change-transform.htmlPASSPASSFAILFAILPASSPASS
resize-generated-content.htmlPASSPASSPASSPASSPASSPASS
resize-iframe-3d-transform.tentative.htmlPASSFAILPASSFAILFAILFAIL
resize-interactive.html10/1010/1010/1010/1010/100/10
resize-textarea-relative-to-right-001.tentative.htmlPASSFAILFAILPASSFAILSKIP
resize-textarea-rtl-001.tentative.htmlPASSFAILPASSPASSFAILSKIP
resize-textarea-rtl-002.tentative.htmlPASSFAILPASSPASSFAILSKIP
select-author-level-padding-applies.htmlPASSPASSPASSPASSPASSPASS
subpixel-outline-width.tentative.htmlPASSPASSPASSPASSPASSPASS
translucent-outline.htmlPASSPASSPASSPASSPASSPASS
transparent-accent-color-001.htmlPASSPASSPASSFAILPASSPASS
transparent-accent-color-002.htmlPASSFAILFAILFAILPASSPASS
user-select-001.htmlPASSPASSPASSFAILPASSSKIP
user-select-button.html6/66/66/64/64/60/6
user-select-inheritance.html1/54/54/55/55/55/5
user-select-none-in-editable.htmlPASSPASSPASSFAILFAILFAIL
user-select-none-on-input.html2/22/22/20/22/20/2
webkit-appearance-auto-001.htmlPASSPASSPASSPASSPASSPASS
webkit-appearance-auto-input-non-widget-001.htmlPASSPASSPASSPASSPASSPASS
webkit-appearance-auto-non-html-namespace-001.htmlPASSPASSPASSFAILFAILPASS
webkit-appearance-button-001.htmlPASSPASSPASSPASSPASSPASS
webkit-appearance-checkbox-001.htmlPASSPASSPASSPASSPASSPASS
webkit-appearance-listbox-001.htmlPASSPASSPASSPASSPASSPASS
webkit-appearance-menulist-001.htmlPASSPASSPASSPASSPASSPASS
webkit-appearance-menulist-button-001.htmlPASSPASSPASSPASSPASSPASS
webkit-appearance-menulist-button-002.tentative.htmlPASSPASSPASSFAILFAILFAIL
webkit-appearance-meter-001.htmlPASSPASSPASSPASSPASSPASS
webkit-appearance-parsing.html3/33/33/33/30/33/3
webkit-appearance-progress-bar-001.htmlPASSPASSPASSPASSPASSPASS
webkit-appearance-progress-bar-002.htmlPASSPASSPASSPASSPASSPASS
webkit-appearance-property.html15/1515/1515/1515/152/1515/15
webkit-appearance-radio-001.htmlPASSPASSPASSPASSPASSPASS
webkit-appearance-searchfield-001.htmlPASSPASSPASSPASSPASSPASS
webkit-appearance-serialization.html3/33/33/33/30/33/3
webkit-appearance-textarea-001.htmlPASSPASSPASSPASSPASSPASS
webkit-appearance-textfield-001.htmlPASSPASSPASSPASSFAILPASS
widget-percentage-height-001.htmlPASSPASSPASSPASSPASSFAIL