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-backgrounds / animations

Spec: CSS Backgrounds ↗

Runs: Chrome 155.0.8042.0 (wpt@a1ecd0c09, 2026-09-04) | Firefox 157.0a1 (wpt@a1ecd0c09, 2026-09-04) | Safari 251 preview (wpt@e7122b73f, 2026-09-04) | Ladybird 1.0-52f0f (wpt@0588f3896, 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

Area	Chrome	Firefox	Safari	Ladybird	Servo	Blitz
Total	96.2%4978/5174	95.9%4964/5174	96.1%4973/5174	94.7%4900/5174	70.8%3662/5174	59.7%3088/5174
invalidation	100.0%4/4	100.0%4/4	100.0%4/4	100.0%4/4	25.0%1/4	25.0%1/4

Test	Chrome	Firefox	Safari	Ladybird	Servo	Blitz
background-color-animation-backdrop-infinite-duration-crash.html	PASS	PASS	PASS	PASS	PASS	PASS
background-color-animation-custom-property.html	PASS	PASS	PASS	PASS	TIMEOUT	FAIL
background-color-animation-custom-timing-function-reverse.html	PASS	PASS	PASS	PASS	TIMEOUT	PASS
background-color-animation-custom-timing-function.html	PASS	PASS	PASS	PASS	TIMEOUT	PASS
background-color-animation-element-not-visible-at-current-viewport.html	PASS	PASS	PASS	PASS	PASS	PASS
background-color-animation-fallback-additive-keyframe.html	PASS	PASS	PASS	PASS	TIMEOUT	FAIL
background-color-animation-fallback-missing-0-percent.html	PASS	PASS	PASS	PASS	TIMEOUT	FAIL
background-color-animation-fallback-missing-100-percent.html	PASS	PASS	PASS	PASS	TIMEOUT	FAIL
background-color-animation-fallback-replace.html	PASS	PASS	PASS	PASS	TIMEOUT	FAIL
background-color-animation-field-crash.html	PASS	PASS	PASS	PASS	PASS	PASS
background-color-animation-fragmented.html	PASS	PASS	PASS	PASS	PASS	PASS
background-color-animation-half-opaque.html	PASS	PASS	PASS	PASS	TIMEOUT	PASS
background-color-animation-in-body.html	PASS	PASS	PASS	PASS	PASS	PASS
background-color-animation-non-empty-no-draw-crash.html	PASS	PASS	PASS	PASS	PASS	PASS
background-color-animation-non-zero-size-element-change-to-zero.html	PASS	PASS	PASS	PASS	PASS	FAIL
background-color-animation-offset-position-not-stuck.html	PASS	PASS	PASS	PASS	TIMEOUT	FAIL
background-color-animation-pseudo-element.html	PASS	PASS	PASS	PASS	TIMEOUT	FAIL
background-color-animation-removed-element-crash.html	PASS	PASS	PASS	PASS	PASS	PASS
background-color-animation-single-keyframe.html	PASS	PASS	PASS	PASS	TIMEOUT	FAIL
background-color-animation-three-keyframes1.html	PASS	PASS	PASS	PASS	TIMEOUT	FAIL
background-color-animation-three-keyframes2.html	PASS	PASS	PASS	PASS	TIMEOUT	FAIL
background-color-animation-three-keyframes3.html	PASS	PASS	PASS	PASS	TIMEOUT	FAIL
background-color-animation-will-change-contents.html	PASS	PASS	PASS	PASS	TIMEOUT	FAIL
background-color-animation-with-blur.html	PASS	PASS	FAIL	PASS	TIMEOUT	FAIL
background-color-animation-with-images.html	PASS	PASS	PASS	PASS	PASS	PASS
background-color-animation-with-mask.html	PASS	PASS	PASS	PASS	TIMEOUT	PASS
background-color-animation-with-table1.html	PASS	PASS	PASS	PASS	PASS	PASS
background-color-animation-with-table2.html	PASS	PASS	PASS	PASS	PASS	PASS
background-color-animation-with-table3.html	PASS	PASS	PASS	PASS	PASS	PASS
background-color-animation-with-table4.html	PASS	PASS	PASS	PASS	PASS	PASS
background-color-animation-with-zero-playbackRate.html	PASS	PASS	PASS	PASS	TIMEOUT	FAIL
background-color-animation-zero-size-element-change-to-non-zero.html	PASS	PASS	PASS	PASS	PASS	FAIL
background-color-animation-zero-size-element.html	PASS	PASS	PASS	PASS	PASS	PASS
background-color-animation.html	PASS	PASS	PASS	PASS	TIMEOUT	FAIL
background-color-interpolation.html	172/172	168/172	172/172	172/172	126/172	126/172
background-color-scroll-into-viewport.html	PASS	PASS	PASS	PASS	TIMEOUT	PASS
background-color-transition-colormix.html	PASS	PASS	PASS	FAIL	FAIL	FAIL
background-color-transition-currentcolor.html	PASS	PASS	PASS	PASS	TIMEOUT	FAIL
background-color-transition.html	PASS	PASS	PASS	PASS	PASS	FAIL
background-color-transparent-animation-in-body.html	PASS	PASS	PASS	PASS	PASS	PASS
background-image-interpolation.html	180/288	198/288	166/288	198/288	132/288	30/288
background-position-composition.html	70/70	70/70	70/70	70/70	35/70	2/70
background-position-interpolation.html	196/196	196/196	196/196	196/196	147/196	147/196
background-position-origin-interpolation.html	280/280	280/280	280/280	280/280	210/280	210/280
background-position-x-interpolation.html	112/112	112/112	112/112	112/112	84/112	84/112
background-position-y-interpolation.html	112/112	112/112	112/112	112/112	84/112	84/112
background-size-composition.html	84/84	74/84	84/84	84/84	38/84	12/84
background-size-interpolation.html	364/364	330/364	364/364	364/364	271/364	271/364
border-bottom-left-radius-composition.html	42/42	42/42	42/42	42/42	21/42	2/42
border-bottom-right-radius-composition.html	42/42	42/42	42/42	42/42	21/42	2/42
border-bottom-width-composition.html	40/40	40/40	40/40	40/40	40/40	40/40
border-color-interpolation.html	144/144	144/144	144/144	144/144	108/144	90/144
border-image-outset-composition.html	112/112	112/112	112/112	74/112	56/112	19/112
border-image-outset-interpolation.html	168/168	168/168	168/168	168/168	126/168	126/168
border-image-slice-composition.html	112/112	112/112	112/112	112/112	56/112	19/112
border-image-slice-interpolation-stability.html	PASS	PASS	PASS	PASS	FAIL	FAIL
border-image-slice-interpolation.html	434/434	434/434	434/434	434/434	343/434	343/434
border-image-source-interpolation.html	206/294	294/294	216/294	294/294	245/294	88/294
border-image-width-composition.html	112/112	112/112	112/112	74/112	56/112	19/112
border-image-width-interpolation.html	558/558	558/558	558/558	558/558	443/558	443/558
border-left-width-composition.html	40/40	40/40	40/40	40/40	40/40	40/40
border-radius-interpolation.html	196/196	196/196	196/196	196/196	147/196	147/196
border-right-width-composition.html	40/40	40/40	40/40	40/40	40/40	40/40
border-top-left-radius-composition.html	42/42	42/42	42/42	42/42	21/42	2/42
border-top-right-radius-composition.html	42/42	42/42	42/42	42/42	21/42	2/42
border-top-width-composition.html	40/40	40/40	40/40	40/40	40/40	40/40
border-width-interpolation.html	256/256	256/256	256/256	252/256	192/256	192/256
border-width-transition-with-style-change.html	PASS	PASS	PASS	FAIL	FAIL	FAIL
box-shadow-composition.html	80/80	80/80	80/80	10/80	40/80	5/80
box-shadow-interpolation.html	402/402	330/402	402/402	370/402	251/402	233/402
discrete-no-interpolation.html	252/252	252/252	252/252	252/252	210/252	210/252
two-background-color-animation-diff-length1.html	PASS	PASS	PASS	PASS	TIMEOUT	FAIL
two-background-color-animation-diff-length2.html	PASS	PASS	PASS	PASS	TIMEOUT	FAIL
two-background-color-animation-diff-length3.html	PASS	PASS	PASS	PASS	TIMEOUT	FAIL