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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-cascade

Spec: CSS Cascading ↗

Runs: Chrome 155.0.8042.0 (wpt@4eb09bcd9, 2026-09-04) | Firefox 157.0a1 (wpt@c3fcbf4ba, 2026-09-04) | Safari 251 preview (wpt@e7122b73f, 2026-09-04) | Ladybird 1.0-52f0f (wpt@a1ecd0c09, 2026-09-04) | Servo Servo 0.6 (wpt@2c385f65e, 2026-09-04) | Blitz a50cb8971 (wpt@a95401e4e, 2026-09-03)

Sort areas: alphabetical | by subtest count

AreaChromeFirefoxSafariLadybirdServoBlitz
Total88.2%1720/195082.4%1607/195084.3%1643/195075.7%1476/195055.1%1075/19508.6%167/1950
parsing100.0%58/58100.0%58/58100.0%58/58100.0%58/5877.6%45/5817.2%10/58
TestChromeFirefoxSafariLadybirdServoBlitz
all-prop-001.htmlPASSPASSPASSFAILPASSFAIL
all-prop-002.htmlPASSPASSPASSPASSPASSFAIL
all-prop-inherit-color.htmlPASSPASSPASSPASSPASSPASS
all-prop-initial-color.htmlPASSPASSPASSPASSPASSPASS
all-prop-initial-visited.htmlPASSFAILPASSFAILFAILFAIL
all-prop-initial-xml.html489/489398/489438/489348/489244/4890/489
all-prop-revert-color.htmlPASSPASSPASSPASSPASSPASS
all-prop-revert-layer-noop.htmlNOT RUNNOT RUNNOT RUNNOT RUNNOT RUN0/114
all-prop-revert-layer-noop.html?include=015/1515/1515/1515/1515/15NOT RUN
all-prop-revert-layer-noop.html?include=115/1515/1515/1515/1515/15NOT RUN
all-prop-revert-layer-noop.html?include=214/1414/1414/1414/1414/14NOT RUN
all-prop-revert-layer-noop.html?include=314/1414/1414/1414/1414/14NOT RUN
all-prop-revert-layer-noop.html?include=414/1414/1414/1414/1414/14NOT RUN
all-prop-revert-layer-noop.html?include=514/1414/1414/1414/1414/14NOT RUN
all-prop-revert-layer-noop.html?include=614/1414/1414/1414/1414/14NOT RUN
all-prop-revert-layer-noop.html?include=714/1414/1414/1414/1414/14NOT RUN
all-prop-revert-layer.html371/372368/372363/372316/372237/3720/372
all-prop-revert-noop.htmlNOT RUNNOT RUNNOT RUNNOT RUNNOT RUN0/114
all-prop-revert-noop.html?include=015/1515/1515/1515/1515/15NOT RUN
all-prop-revert-noop.html?include=115/1515/1515/1515/1515/15NOT RUN
all-prop-revert-noop.html?include=214/1414/1414/1414/1414/14NOT RUN
all-prop-revert-noop.html?include=314/1414/1414/1414/1413/14NOT RUN
all-prop-revert-noop.html?include=414/1414/1414/1414/1413/14NOT RUN
all-prop-revert-noop.html?include=514/1414/1414/1414/1414/14NOT RUN
all-prop-revert-noop.html?include=614/1414/1414/1414/1414/14NOT RUN
all-prop-revert-noop.html?include=714/1414/1414/1414/1414/14NOT RUN
all-prop-revert-visited.htmlPASSPASSPASSPASSPASSPASS
all-prop-unset-color.htmlPASSPASSPASSPASSPASSPASS
all-prop-unset-visited.htmlPASSPASSPASSPASSPASSPASS
at-scope-parsing.html43/4343/4343/4343/4328/430/43
at-scope-relative-syntax.html8/88/88/88/80/80/8
idlharness.html34/3434/3434/3434/3422/340/34
import-conditional-001.htmlPASSPASSPASSPASSPASSPASS
import-conditional-002.htmlPASSPASSPASSPASSPASSPASS
import-conditions.html29/2929/2928/2929/2923/290/29
import-removal.htmlPASSPASSPASSPASSPASSFAIL
important-prop.htmlPASSPASSPASSPASSPASSPASS
important-vs-inline-001.html4/44/44/44/44/44/4
important-vs-inline-002.html4/44/44/44/44/44/4
important-vs-inline-003.htmlPASSPASSPASSPASSPASSPASS
inherit-initial.html4/44/44/44/44/44/4
initial-background-color.htmlPASSPASSPASSPASSPASSPASS
initial-color-background-001.htmlPASSPASSPASSPASSPASSPASS
inline-style-background.htmlPASSPASSPASSPASSPASSPASS
inline-style-revert-layer-crash.htmlPASSPASSPASSPASSPASSPASS
layer-basic.html34/3434/3434/3434/3434/3434/34
layer-counter-style-override.html4/44/44/44/40/40/4
layer-cssom-order-reverse-at-property.html2/22/22/21/22/20/2
layer-cssom-order-reverse.html4/44/44/43/44/40/4
layer-font-face-override.html4/44/44/43/42/44/4
layer-import.html24/2424/2424/2424/2424/240/24
layer-important.html9/99/99/99/99/99/9
layer-keyframes-override.html4/44/44/41/44/44/4
layer-media-query.html8/88/88/88/88/80/8
layer-media-toggle.htmlPASSPASSPASSPASSPASSPASS
layer-namespace-sandwich-crash.htmlPASSPASSPASSPASSPASSPASS
layer-property-override.html4/44/44/41/44/44/4
layer-replaceSync-clears-stale.htmlPASSPASSPASSPASSFAILFAIL
layer-rules-cssom.html9/99/99/99/99/90/9
layer-slotted-rule.htmlPASSPASSPASSPASSPASSFAIL
layer-statement-before-import.html7/77/77/77/77/70/7
layer-statement-copy-crash.htmlPASSPASSPASSPASSPASSPASS
layer-stylesheet-multi-adoption.htmlPASSPASSPASSFAILFAILFAIL
layer-stylesheet-sharing-important.htmlPASSPASSPASSPASSPASSPASS
layer-stylesheet-sharing.htmlPASSPASSPASSPASSPASSPASS
layer-vs-inline-style.html4/44/44/44/44/41/4
presentational-hints-cascade.html3/33/33/33/33/33/3
presentational-hints-rollback.html16/1614/1616/1614/1616/1616/16
revert-layer-001.htmlPASSPASSPASSPASSPASSPASS
revert-layer-002.htmlPASSPASSPASSPASSPASSPASS
revert-layer-003.htmlPASSPASSPASSPASSPASSPASS
revert-layer-004.htmlPASSPASSPASSPASSPASSFAIL
revert-layer-005.htmlPASSPASSPASSPASSPASSPASS
revert-layer-006.htmlPASSPASSPASSPASSPASSPASS
revert-layer-007.htmlPASSPASSPASSPASSPASSPASS
revert-layer-008.htmlPASSPASSPASSPASSPASSPASS
revert-layer-009.htmlPASSPASSPASSFAILPASSPASS
revert-layer-010.htmlPASSFAILPASSPASSPASSPASS
revert-layer-011.htmlPASSPASSPASSPASSPASSPASS
revert-layer-012.htmlPASSPASSPASSFAILPASSPASS
revert-layer-013.htmlPASSPASSPASSPASSPASSFAIL
revert-layer-014.htmlPASSPASSPASSPASSPASSFAIL
revert-layer-015.htmlPASSPASSPASSPASSPASSPASS
revert-rule-basic.html4/44/44/40/44/44/4
revert-rule-custom-property.htmlPASSPASSPASSFAILPASSPASS
revert-rule-cycle.tentative.html2/20/20/20/20/2NOT RUN
revert-rule-important.html3/33/33/32/33/33/3
revert-rule-layer.html2/22/22/20/22/22/2
revert-rule-revert-layer.html5/55/55/50/55/55/5
revert-rule-shadow.html12/1212/1212/126/1212/120/12
revert-val-001.htmlPASSPASSPASSPASSPASSPASS
revert-val-002.htmlPASSPASSPASSPASSPASSPASS
revert-val-003.htmlPASSPASSPASSPASSPASSPASS
revert-val-004.htmlPASSPASSPASSPASSPASSPASS
revert-val-005.html2/22/22/21/22/22/2
revert-val-006.htmlPASSFAILPASSFAILPASSPASS
revert-val-007.htmlPASSFAILPASSFAILPASSPASS
revert-val-008.htmlPASSFAILPASSPASSFAILFAIL
revert-val-009.htmlPASSPASSPASSPASSFAILFAIL
revert-val-010.htmlPASSFAILPASSPASSFAILFAIL
revert-val-011.html3/33/33/33/33/33/3
scope-container.htmlPASSPASSPASSPASSFAILFAIL
scope-cssom.html13/1313/1313/1313/130/130/13
scope-declaration-list-crash.htmlPASSPASSPASSPASSPASSPASS
scope-declarations.html5/55/55/55/50/50/5
scope-deep.htmlPASSFAILPASSPASSFAILFAIL
scope-evaluation.html26/2626/2626/2626/269/260/26
scope-featureless.htmlPASSPASSPASSPASSPASSPASS
scope-focus.html4/44/44/44/40/40/4
scope-has-crash.htmlPASSPASSPASSPASSPASSPASS
scope-hover.html4/44/44/44/40/40/4
scope-implicit-001-print.htmlPASSPASSNOT RUNNOT RUNNOT RUNFAIL
scope-implicit-002-print.htmlPASSPASSNOT RUNNOT RUNNOT RUNFAIL
scope-implicit-003-print.htmlPASSPASSNOT RUNNOT RUNNOT RUNFAIL
scope-implicit-004-print.xhtmlPASSPASSNOT RUNNOT RUNNOT RUNFAIL
scope-implicit-005-print.htmlPASSPASSNOT RUNNOT RUNNOT RUNFAIL
scope-implicit-006-print.htmlPASSPASSNOT RUNNOT RUNNOT RUNFAIL
scope-implicit-crash-print.htmlPASSPASSNOT RUNNOT RUNNOT RUNPASS
scope-implicit-external.html2/22/22/22/20/20/2
scope-implicit.html11/1111/1111/1111/112/110/11
scope-import-implicit.html1/21/21/22/21/21/2
scope-import-inner-scope.html2/21/21/22/21/21/2
scope-import-multiple.html2/21/21/22/21/21/2
scope-import-parent-pseudo.html2/20/20/22/20/20/2
scope-import-scope-end.html2/21/21/22/21/21/2
scope-import-scope-pseudo.htmlPASSFAILFAILPASSFAILFAIL
scope-import-scope-start.html2/21/21/22/21/21/2
scope-inner-pseudo-scope-crash.htmlPASSPASSPASSPASSPASSPASS
scope-invalidation.html29/2929/2929/2929/290/290/29
scope-layer.htmlPASSPASSPASSPASSFAILFAIL
scope-media.htmlPASSPASSPASSPASSFAILFAIL
scope-name-defining-rules.html4/44/44/44/40/40/4
scope-nesting.html24/2424/2424/2424/240/240/24
scope-overlapping-has.htmlPASSPASSPASSPASSFAILFAIL
scope-part.htmlPASSPASSPASSPASSFAILFAIL
scope-proximity.html5/55/55/55/50/50/5
scope-pseudo-element.htmlPASSPASSPASSPASSFAILFAIL
scope-shadow-sharing.htmlPASSPASSPASSPASSFAILFAIL
scope-shadow.html9/99/99/99/90/90/9
scope-specificity.html11/1111/1111/1111/110/110/11
scope-starting-style.htmlPASSPASSPASSFAILFAILFAIL
scope-style-sharing-001.html13/1313/1313/1313/130/130/13
scope-style-sharing-002.html13/1313/1313/1313/130/130/13
scope-supports.htmlPASSPASSPASSPASSFAILFAIL
scope-ua-shadow-host.htmlPASSPASSPASSPASSFAILFAIL
scope-visited-cssom.html16/1616/1615/1616/168/160/16
scope-visited.htmlPASSFAILPASSFAILFAILFAIL
tons-of-declarations-crash.htmlPASSPASSPASSPASSPASSPASS
unset-val-001.htmlPASSPASSPASSPASSPASSPASS
unset-val-002.htmlPASSPASSPASSPASSPASSPASS
unset-value-storage.htmlPASSPASSPASSPASSPASSFAIL