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-variables

Spec: CSS Variables ↗

Runs: Chrome 155.0.8039.0 (wpt@508cc6a62, 2026-09-03) | Firefox 157.0a1 (wpt@508cc6a62, 2026-09-03) | Safari 251 preview (wpt@5ce815a83, 2026-08-27) | Ladybird 1.0-56c61 (wpt@8fdda8ce4, 2026-09-03) | Servo Servo 0.6 (wpt@09159dcb3, 2026-09-02) | Blitz 188486089 (wpt@a95401e4e, 2026-09-02)

Sort areas: alphabetical | by subtest count

Area	Chrome	Firefox	Safari	Ladybird	Servo	Blitz
Total	NO DATA	NO DATA	95.9%740/772	88.0%679/772	82.6%638/772	75.1%580/772

Test	Chrome	Firefox	Safari	Ladybird	Servo	Blitz
css-variable-change-style-001.html	9/9	9/9	9/9	9/9	9/9	9/9
css-variable-change-style-002.html	3/3	3/3	3/3	3/3	3/3	3/3
css-vars-custom-property-case-sensitive-001.html	PASS	PASS	PASS	PASS	PASS	PASS
css-vars-custom-property-inheritance.html	PASS	PASS	PASS	PASS	PASS	PASS
long-variable-reference-crash.html	PASS	PASS	PASS	PASS	PASS	PASS
missing-closing-nested-fallback-crash.html	PASS	PASS	PASS	PASS	PASS	PASS
missing-closing-nested-fallback.html	PASS	PASS	PASS	PASS	PASS	PASS
registered-property-light-dark.html	PASS	PASS	PASS	PASS	PASS	FAIL
revert-in-fallback.html	4/4	4/4	4/4	3/4	4/4	4/4
revert-layer-in-fallback.html	4/4	3/4	4/4	3/4	3/4	3/4
revert-rule-in-fallback.html	4/4	3/4	4/4	0/4	3/4	3/4
revert-rule-to-var.html	PASS	PASS	PASS	FAIL	PASS	PASS
test_variable_legal_values.html	23/23	23/23	23/23	23/23	23/23	23/23
url-syntax-crash.html	PASS	PASS	PASS	PASS	PASS	PASS
url-token-serialization.html	6/6	6/6	6/6	6/6	6/6	6/6
var-ident-function.html	1/5	1/5	5/5	3/5	1/5	2/5
var-parsing.html	10/18	10/18	18/18	13/18	10/18	8/18
variable-animation-from-to.html	4/4	4/4	4/4	4/4	4/4	0/4
variable-animation-guaranteed-invalid.html	6/6	6/6	6/6	6/6	6/6	6/6
variable-animation-over-transition.html	4/4	4/4	4/4	4/4	4/4	0/4
variable-animation-substitute-into-keyframe-shorthand.html	2/2	2/2	2/2	0/2	2/2	0/2
variable-animation-substitute-into-keyframe-transform.html	2/2	2/2	2/2	2/2	2/2	0/2
variable-animation-substitute-into-keyframe.html	2/2	2/2	2/2	2/2	2/2	0/2
variable-animation-substitute-within-keyframe-fallback.html	2/2	2/2	2/2	2/2	2/2	0/2
variable-animation-substitute-within-keyframe-multiple.html	2/2	2/2	2/2	2/2	2/2	0/2
variable-animation-substitute-within-keyframe.html	2/2	2/2	2/2	2/2	2/2	0/2
variable-animation-to-only.html	2/2	2/2	2/2	2/2	2/2	0/2
variable-created-document.html	2/2	2/2	2/2	2/2	2/2	0/2
variable-created-element.html	3/3	3/3	3/3	3/3	3/3	3/3
variable-css-wide-keywords-after-substitution.html	6/6	4/6	6/6	4/6	4/6	4/6
variable-css-wide-keywords.html	30/30	27/30	30/30	26/30	27/30	27/30
variable-cssText.html	11/11	11/11	10/11	8/11	11/11	11/11
variable-cycles.html	11/11	11/11	11/11	11/11	11/11	0/11
variable-declaration-01.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-02.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-03.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-04.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-05.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-06.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-07.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-08.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-09.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-10.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-11.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-12.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-13.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-14.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-15.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-16.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-17.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-18.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-19.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-20.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-21.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-22.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-23.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-24.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-25.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-26.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-29.html	FAIL	FAIL	PASS	PASS	FAIL	PASS
variable-declaration-30.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-31.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-32.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-33.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-34.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-35.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-36.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-37.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-38.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-39.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-40.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-41.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-42.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-43.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-44.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-45.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-46.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-47.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-48.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-49.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-50.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-51.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-52.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-53.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-54.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-55.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-56.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-57.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-58.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-59.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-declaration-60.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-definition-border-shorthand-serialize.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-definition-cascading.html	9/9	9/9	9/9	9/9	9/9	9/9
variable-definition-keywords.html	8/8	8/8	8/8	7/8	8/8	8/8
variable-definition.html	59/73	59/73	59/73	53/73	59/73	58/73
variable-empty-name-reserved.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-exponential-blowup.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-external-declaration-01.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-external-font-face-01.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-external-reference-01.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-external-supports-01.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-first-letter.html	6/6	6/6	4/6	6/6	0/6	2/6
variable-first-line.html	6/6	6/6	4/6	6/6	0/6	2/6
variable-font-face-01.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-font-face-02.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-generated-content-dynamic-001.html	PASS	PASS	PASS	PASS	PASS	FAIL
variable-invalid-recovery.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-invalidation.html	4/4	4/4	4/4	4/4	4/4	0/4
variable-presentation-attribute.html	35/48	34/48	36/48	32/48	24/48	26/48
variable-pseudo-element.html	3/3	3/3	3/3	3/3	3/3	1/3
variable-recalc-with-initial.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-01.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-02.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-03.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-04.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-05.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-06.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-07.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-08.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-09.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-10.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-11.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-12.html	PASS	PASS	PASS	PASS	PASS	FAIL
variable-reference-13.html	PASS	PASS	PASS	FAIL	PASS	PASS
variable-reference-14.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-15.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-16.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-17.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-18.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-19.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-20.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-21.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-22.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-23.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-24.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-25.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-26.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-27.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-28.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-29.html	PASS	PASS	PASS	FAIL	PASS	PASS
variable-reference-30.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-31.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-32.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-33.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-34.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-35.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-36.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-37.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-38.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-39.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-40.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-cssom.html	2/2	2/2	2/2	2/2	2/2	2/2
variable-reference-name-substitution-attr-taint.html	6/9	6/9	9/9	4/9	6/9	NOT RUN
variable-reference-name-substitution.html	3/24	3/24	24/24	20/24	3/24	NOT RUN
variable-reference-perspective-origin.html	6/6	6/6	6/6	0/6	0/6	0/6
variable-reference-refresh.html	2/2	2/2	2/2	2/2	2/2	0/2
variable-reference-shorthands-cssom.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-shorthands.html	16/16	16/16	16/16	16/16	16/16	16/16
variable-reference-variable.html	2/2	2/2	2/2	2/2	2/2	2/2
variable-reference-visited.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-reference-without-whitespace.html	PASS	PASS	PASS	PASS	FAIL	FAIL
variable-reference.html	11/18	10/18	18/18	17/18	10/18	17/18
variable-resolution-during-prioritary-properties.html	5/5	5/5	5/5	5/5	5/5	5/5
variable-substitution-background-properties.html	10/10	10/10	10/10	10/10	10/10	10/10
variable-substitution-basic.html	13/13	13/13	13/13	13/13	13/13	13/13
variable-substitution-filters.html	7/7	7/7	7/7	7/7	7/7	7/7
variable-substitution-replaced-size.html	6/6	6/6	6/6	6/6	6/6	6/6
variable-substitution-shadow-properties.html	3/3	3/3	3/3	3/3	3/3	3/3
variable-substitution-shorthands.html	51/51	51/51	51/51	50/51	51/51	48/51
variable-substitution-variable-declaration.html	31/31	30/31	30/31	30/31	30/31	24/31
variable-supports-01.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-02.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-03.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-04.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-05.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-06.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-07.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-08.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-09.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-10.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-11.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-12.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-13.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-14.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-15.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-16.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-17.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-18.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-19.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-20.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-21.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-22.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-23.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-24.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-25.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-26.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-27.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-28.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-29.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-30.html	FAIL	FAIL	PASS	PASS	FAIL	PASS
variable-supports-31.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-32.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-33.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-34.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-35.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-36.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-37.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-38.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-39.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-40.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-41.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-42.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-43.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-44.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-45.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-46.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-47.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-48.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-49.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-50.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-51.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-52.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-53.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-54.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-55.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-56.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-57.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-58.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-59.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-60.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-61.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-62.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-63.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-64.html	FAIL	FAIL	PASS	PASS	FAIL	PASS
variable-supports-65.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-66.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-supports-67.html	PASS	PASS	PASS	PASS	PASS	PASS
variable-transitions-transition-property-all-before-value.html	4/4	4/4	4/4	4/4	4/4	0/4
variable-transitions-value-before-transition-property-all.html	4/4	4/4	4/4	4/4	4/4	0/4
variables-animation-math-functions.html	36/36	36/36	36/36	26/36	14/36	14/36
variables-substitute-guaranteed-invalid.html	3/3	3/3	3/3	3/3	3/3	3/3
vars-background-shorthand-001.html	PASS	FAIL	PASS	PASS	PASS	PASS
vars-border-shorthand-serialize.html	3/3	3/3	3/3	3/3	3/3	3/3
vars-font-shorthand-001.html	PASS	PASS	PASS	FAIL	PASS	PASS
whitespace-in-fallback-crash.html	PASS	PASS	PASS	PASS	PASS	PASS
wide-keyword-fallback-001.html	PASS	PASS	PASS	PASS	PASS	PASS
wide-keyword-fallback-002.html	PASS	PASS	PASS	PASS	PASS	PASS