Status

This page documents the implementation status of various HTML and CSS features in Blitz.

This page documents Blitz's scores on the "css" subsuite of the Web Platform Tests.

Score history

Data from commit:
ab0e30b Give form controls a UA default font-family (#940) (2026-09-25)

Area	Interop Score	Tests	Test %	Subtests	Subtest %
Total	72.93%	(54/92)	58.70%	(877/1454)	60.32%
parsing	96.42%	(48/54)	88.89%	(499/517)	96.52%
animations	66.66%	(0/7)	0.00%	(142/181)	78.45%

Test	Subtests	Subtest %	Status
animation-001.html	(0/24)	0.00%	FAIL
animation-002.html	(0/15)	0.00%	SKIP
animation-003.tentative.html	(0/1)	0.00%	FAIL
animation-004.html	(0/16)	0.00%	SKIP
cascading-001.html	(1/1)	100.00%	PASS
getComputedStyle-listing.html	(0/30)	0.00%	FAIL
inheritance.html	(64/68)	94.12%	FAIL
logical-box-border-color.html	(12/52)	23.08%	FAIL
logical-box-border-radius.html	(17/49)	34.69%	FAIL
logical-box-border-shorthands.html	(11/52)	21.15%	FAIL
logical-box-border-style.html	(12/52)	23.08%	FAIL
logical-box-border-width.html	(12/52)	23.08%	FAIL
logical-box-inset.html	(12/52)	23.08%	FAIL
logical-box-margin.html	(12/52)	23.08%	FAIL
logical-box-padding.html	(12/52)	23.08%	FAIL
logical-box-size.html	(21/111)	18.92%	FAIL
logical-values-float-clear-1.html	(0/1)	0.00%	FAIL
logical-values-float-clear-2.html	(0/1)	0.00%	FAIL
logical-values-float-clear-3.html	(0/1)	0.00%	FAIL
logical-values-float-clear-4.html	(0/1)	0.00%	FAIL
logical-values-float-clear-reftest.html	(0/1)	0.00%	FAIL
logical-values-float-clear.html	(4/4)	100.00%	PASS
logical-values-resize.html	(0/2)	0.00%	FAIL
logicalprops-block-size-vlr.html	(1/8)	12.50%	FAIL
logicalprops-block-size.html	(6/8)	75.00%	FAIL
logicalprops-inline-size-vlr.html	(2/8)	25.00%	FAIL
logicalprops-inline-size.html	(8/8)	100.00%	PASS
logicalprops-quirklength.html	(10/10)	100.00%	PASS
logicalprops-with-deferred-writing-mode.html	(1/6)	16.67%	FAIL
logicalprops-with-variables-revert.html	(6/6)	100.00%	PASS
logicalprops-with-variables.html	(12/12)	100.00%	PASS