:indeterminate CSS pseudo-class

The :indeterminate pseudo-class matches indeterminate checkboxes, indeterminate <progress> bars, and radio buttons with no checked button in their radio button group.

Spec	https://drafts.csswg.org/selectors-4/#indeterminate
Status	Unofficial / Note

IE	Edge	Firefox	Chrome	Safari	Opera
			98
		95	97
		94	96	TP
11 ⁽¹⁾	95	93	95	15	80
10 ⁽¹⁾	94	92	94	14.1	79
9 ^(1,2)	93	91	93	14	78
8	92	90	92	13.1	77
Show all
7	91	89	91	13	76
6	90	88	90	12.1	75
5.5	89	87	89	12	74
	88	86	88	11.1	73
	87	85	87	11	72
	86	84	86	10.1	71
	85	83	85	10 ⁽¹⁾	70
	84	82	84	9.1 ⁽¹⁾	69
	83	81	83	9 ⁽¹⁾	68
	81	80	81	8 ⁽¹⁾	67
	80	79	80	7.1 ⁽¹⁾	66
	79	78	79	7 ⁽¹⁾	65
	18 ⁽¹⁾	77	78	6.1 ⁽¹⁾	64
	17 ⁽¹⁾	76	77	6	63
	16 ⁽¹⁾	75	76	5.1 ^(1,2)	62
	15 ⁽¹⁾	74	75	5	60
	14 ⁽¹⁾	73	74	4	58
	13 ⁽¹⁾	72	73	3.2	57
	12 ⁽¹⁾	71	72	3.1	56
		70	71		55
		69	70		54
		68	69		53
		67	68		52
		66	67		51
		65	66		50
		64	65		49
		63	64		48
		62	63		47
		61	62		46
		60	61		45
		59	60		44
		58	59		43
		57	58		42
		56	57		41
		55	56		40
		54	55		39
		53	54		38
		52	53		37
		51	52		36
		50 ⁽¹⁾	51		35
		49 ⁽¹⁾	50		34
		48 ⁽¹⁾	49		33
		47 ⁽¹⁾	48		32
		46 ⁽¹⁾	47		31
		45 ⁽¹⁾	46		30
		44 ⁽¹⁾	45		29
		43 ⁽¹⁾	44		28
		42 ⁽¹⁾	43		27
		41 ⁽¹⁾	42		26
		40 ⁽¹⁾	41		25 ⁽¹⁾
		39 ⁽¹⁾	40		24 ⁽¹⁾
		38 ⁽¹⁾	39		23 ⁽¹⁾
		37 ⁽¹⁾	38 ⁽¹⁾		22 ⁽¹⁾
		36 ⁽¹⁾	37 ⁽¹⁾		21 ⁽¹⁾
		35 ⁽¹⁾	36 ⁽¹⁾		20 ⁽¹⁾
		34 ⁽¹⁾	35 ⁽¹⁾		19 ⁽¹⁾
		33 ⁽¹⁾	34 ⁽¹⁾		18 ⁽¹⁾
		32 ⁽¹⁾	33 ⁽¹⁾		17 ⁽¹⁾
		31 ⁽¹⁾	32 ⁽¹⁾		16 ⁽¹⁾
		30 ⁽¹⁾	31 ⁽¹⁾		15 ⁽¹⁾
		29 ⁽¹⁾	30 ⁽¹⁾		12.1 ⁽³⁾
		28 ⁽¹⁾	29 ⁽¹⁾		12 ⁽³⁾
		27 ⁽¹⁾	28 ⁽¹⁾		11.6 ⁽³⁾
		26 ⁽¹⁾	27 ⁽¹⁾		11.5
		25 ⁽¹⁾	26 ⁽¹⁾		11.1
		24 ⁽¹⁾	25 ⁽¹⁾		11
		23 ⁽¹⁾	24 ⁽¹⁾		10.6
		22 ⁽¹⁾	23 ⁽¹⁾		10.5
		21 ⁽¹⁾	22 ⁽¹⁾		10.0-10.1
		20 ⁽¹⁾	21 ⁽¹⁾		9.5-9.6
		19 ⁽¹⁾	20 ⁽¹⁾		9
		18 ⁽¹⁾	19 ⁽¹⁾
		17 ⁽¹⁾	18 ⁽¹⁾
		16 ⁽¹⁾	17 ⁽¹⁾
		15 ⁽¹⁾	16 ⁽¹⁾
		14 ⁽¹⁾	15 ⁽¹⁾
		13 ⁽¹⁾	14
		12 ⁽¹⁾	13
		11 ⁽¹⁾	12
		10 ⁽¹⁾	11
		9 ⁽¹⁾	10
		8 ⁽¹⁾	9
		7 ⁽¹⁾	8
		6 ⁽¹⁾	7
		5 ^(1,2)	6
		4 ^(1,2)	5
		3.6	4
		3.5
		3
		2

Safari on iOS	Opera Mini	Android Browser	Blackberry Browser	Opera Mobile	Android Chrome	Android Firefox	IE Mobile	Android UC Browser	Samsung Internet	QQ Browser	Baidu Browser	KaiOS Browser
15	all ⁽³⁾	94	10 ⁽¹⁾	64	94	92	11 ⁽¹⁾	12.12	15.0	10.4	7.12	2.5 ⁽¹⁾
14.5-14.8		4.4.3-4.4.4	7	12.1 ⁽³⁾			10 ⁽¹⁾		14.0
14.0-14.4		4.4 ⁽¹⁾		12					13.0
13.4-13.7		4.2-4.3 ^(1,2)		11.5					12.0
Show all
13.3		4.1 ^(1,2)		11.1					11.1-11.2
13.2		4 ^(1,2)		11					10.1
13.0-13.1		3		10					9.2
12.2-12.5		2.3							8.2
12.0-12.1		2.2							7.2-7.4
11.3-11.4		2.1							6.2-6.4
11.0-11.2									5.0-5.4
10.3									4
10.0-10.2 ⁽¹⁾
9.3 ⁽¹⁾
9.0-9.2 ⁽¹⁾
8.1-8.4 ⁽¹⁾
8 ⁽¹⁾
7.0-7.1 ⁽¹⁾
6.0-6.1
5.0-5.1
4.2-4.3
4.0-4.1
3.2

Notes

Doesn't match radio buttons whose radio button group lacks a checked radio button
Doesn't support the <progress> element
Doesn't match indeterminate <progress> bars

Resources

Data by caniuse.com
Licensed under the Creative Commons Attribution License v4.0.
https://caniuse.com/css-indeterminate-pseudo