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	52.29%	(14/33)	42.42%	(300/487)	61.60%

Test	Subtests	Subtest %	Status
at-font-face-descriptors.html	(83/88)	94.32%	FAIL
at-font-face-font-matching.html	(0/107)	0.00%	SKIP
font-descriptor-range-reversed-002.html	(0/1)	0.00%	FAIL
font-descriptor-range-reversed.html	(0/1)	0.00%	FAIL
font-opentype-collections.html	(0/1)	0.00%	SKIP
font-parse-numeric-stretch-style-weight.html	(29/81)	35.80%	FAIL
font-shorthand.html	(22/22)	100.00%	PASS
font-slant-1.html	(0/1)	0.00%	FAIL
font-slant-2a.html	(1/1)	100.00%	PASS
font-slant-2b.html	(1/1)	100.00%	PASS
font-slant-2c.html	(0/1)	0.00%	FAIL
font-slant-3.html	(0/1)	0.00%	FAIL
font-stretch.html	(50/51)	98.04%	FAIL
font-style-interpolation.html	(0/2)	0.00%	SKIP
font-style-parsing.html	(42/43)	97.67%	FAIL
font-variation-settings-inherit.html	(3/3)	100.00%	PASS
font-weight-3.html	(0/1)	0.00%	FAIL
font-weight-interpolation.html	(0/2)	0.00%	SKIP
font-weight-lighter-bolder.html	(22/22)	100.00%	PASS
font-weight-matching-installed-fonts.html	(0/6)	0.00%	FAIL
font-weight-matching.html	(14/14)	100.00%	PASS
font-weight-metrics.html	(1/1)	100.00%	PASS
font-weight-parsing.html	(26/26)	100.00%	PASS
slnt-backslant-variable.html	(0/1)	0.00%	FAIL
slnt-variable.html	(0/1)	0.00%	FAIL
variable-avar2-rvrn.html	(1/1)	100.00%	PASS
variable-avar2-warp.html	(1/1)	100.00%	PASS
variable-box-font.html	(1/1)	100.00%	PASS
variable-gpos-avar2.html	(1/1)	100.00%	PASS
variable-gpos-m2b.html	(1/1)	100.00%	PASS
variable-gsub.html	(1/1)	100.00%	PASS
variable-opsz-size-adjust.html	(0/1)	0.00%	FAIL
variable-opsz.html	(0/1)	0.00%	FAIL