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	57.92%	(26/50)	52.00%	(412/446)	92.38%
charset	4.76%	(1/21)	4.76%	(1/21)	4.76%
crashtests	100.00%	(3/3)	100.00%	(3/3)	100.00%

Test	Subtests	Subtest %	Status
anb-parsing.html	(67/67)	100.00%	PASS
anb-serialization.html	(20/20)	100.00%	PASS
at-rule-in-declaration-list.html	(4/6)	66.67%	FAIL
cdc-vs-ident-tokens.html	(1/1)	100.00%	PASS
charset-is-not-a-rule.html	(1/1)	100.00%	PASS
custom-property-rule-ambiguity.html	(4/4)	100.00%	PASS
decimal-points-in-numbers.html	(6/6)	100.00%	PASS
declarations-trim-whitespace.html	(9/9)	100.00%	PASS
escaped-eof.html	(2/5)	40.00%	FAIL
ident-three-code-points.html	(8/8)	100.00%	PASS
inclusive-ranges.html	(38/38)	100.00%	PASS
input-preprocessing.html	(10/10)	100.00%	PASS
invalid-nested-rules.html	(1/1)	100.00%	PASS
missing-semicolon.html	(1/1)	100.00%	PASS
non-ascii-codepoints.html	(15/15)	100.00%	FAIL
parse-invalid-input.html	(8/8)	100.00%	PASS
serialize-consecutive-tokens.html	(69/72)	95.83%	FAIL
serialize-escape-identifiers.html	(1/1)	100.00%	PASS
trailing-braces.html	(1/1)	100.00%	PASS
unclosed-constructs.html	(4/4)	100.00%	PASS
unclosed-url-at-eof.html	(2/2)	100.00%	PASS
unicode-range-selector.html	(1/1)	100.00%	PASS
urange-parsing.html	(89/95)	93.68%	FAIL
url-whitespace-consumption.html	(1/1)	100.00%	PASS
var-with-blocks.html	(14/14)	100.00%	PASS
whitespace.html	(31/31)	100.00%	PASS