:is() CSS pseudo-class

The :is() (formerly :matches(), formerly :any()) pseudo-class checks whether the element at its position in the outer selector matches any of the selectors in its selector list. It's useful syntactic sugar that allows you to avoid writing out all the combinations manually as separate selectors. The effect is similar to nesting in Sass and most other CSS preprocessors.

Spec	https://www.w3.org/TR/selectors4/#matches
Status	W3C Working Draft

IE	Edge	Firefox	Chrome	Safari	Opera
			98
		95	97
		94	96	TP
11	95	93	95	15	80
10	94	92	94	14.1	79
9	93	91	93	14	78
8	92	90	92	13.1 (2)	77
Show all
7	91	89	91	13 (2)	76
6	90	88	90	12.1 (2)	75
5.5	89	87	89	12 (2)	74 (1,4)
	88	86	88	11.1 (2)	73 (1,4)
	87 (1,4)	85	87 (1,4)	11 (2)	72 (1,4)
	86 (1,4)	84	86 (1,4)	10.1 (2)	71 (1,4)
	85 (1,4)	83	85 (1,4)	10 (2)	70 (1,4)
	84 (1,4)	82	84 (1,4)	9.1 (2)	69 (1,4)
	83 (1,4)	81	83 (1,4)	9 (2)	68 (1,4)
	81 (1,4)	80	81 (1,4)	8 (1,*)	67 (1,4)
	80 (1,4)	79	80 (1,4)	7.1 (1,*)	66 (1,4)
	79 (1,4)	78	79 (1,4)	7 (1,*)	65 (1,4)
	18	77 (3,*)	78 (1,4)	6.1 (1,*)	64 (1,4)
	17	76 (3,*)	77 (1,4)	6 (1,*)	63 (1,4)
	16	75 (3,*)	76 (1,4)	5.1 (1,*)	62 (1,4)
	15	74 (3,*)	75 (1,4)	5	60 (1,4)
	14	73 (3,*)	74 (1,4)	4	58 (1,4)
	13	72 (3,*)	73 (1,4)	3.2	57 (1,4)
	12	71 (3,*)	72 (1,4)	3.1	56 (1,4)
		70 (3,*)	71 (1,4)		55 (1,4)
		69 (3,*)	70 (1,4)		54 (1)
		68 (3,*)	69 (1,4)		53 (1)
		67 (3,*)	68 (1,4)		52 (1)
		66 (3,*)	67 (1)		51 (1,*)
		65 (3,*)	66 (1)		50 (1,*)
		64 (3,*)	65 (1)		49 (1,*)
		63 (3,*)	64 (1,*)		48 (1,*)
		62 (3,*)	63 (1,*)		47 (1,*)
		61 (3,*)	62 (1,*)		46 (1,*)
		60 (3,*)	61 (1,*)		45 (1,*)
		59 (3,*)	60 (1,*)		44 (1,*)
		58 (3,*)	59 (1,*)		43 (1,*)
		57 (3,*)	58 (1,*)		42 (1,*)
		56 (3,*)	57 (1,*)		41 (1,*)
		55 (3,*)	56 (1,*)		40 (1,*)
		54 (3,*)	55 (1,*)		39 (1,*)
		53 (3,*)	54 (1,*)		38 (1,*)
		52 (3,*)	53 (1,*)		37 (1,*)
		51 (3,*)	52 (1,*)		36 (1,*)
		50 (3,*)	51 (1,*)		35 (1,*)
		49 (3,*)	50 (1,*)		34 (1,*)
		48 (3,*)	49 (1,*)		33 (1,*)
		47 (3,*)	48 (1,*)		32 (1,*)
		46 (3,*)	47 (1,*)		31 (1,*)
		45 (3,*)	46 (1,*)		30 (1,*)
		44 (3,*)	45 (1,*)		29 (1,*)
		43 (3,*)	44 (1,*)		28 (1,*)
		42 (3,*)	43 (1,*)		27 (1,*)
		41 (3,*)	42 (1,*)		26 (1,*)
		40 (3,*)	41 (1,*)		25 (1,*)
		39 (3,*)	40 (1,*)		24 (1,*)
		38 (3,*)	39 (1,*)		23 (1,*)
		37 (3,*)	38 (1,*)		22 (1,*)
		36 (3,*)	37 (1,*)		21 (1,*)
		35 (3,*)	36 (1,*)		20 (1,*)
		34 (3,*)	35 (1,*)		19 (1,*)
		33 (3,*)	34 (1,*)		18 (1,*)
		32 (3,*)	33 (1,*)		17 (1,*)
		31 (3,*)	32 (1,*)		16 (1,*)
		30 (3,*)	31 (1,*)		15 (1,*)
		29 (3,*)	30 (1,*)		12.1
		28 (3,*)	29 (1,*)		12
		27 (3,*)	28 (1,*)		11.6
		26 (3,*)	27 (1,*)		11.5
		25 (3,*)	26 (1,*)		11.1
		24 (3,*)	25 (1,*)		11
		23 (3,*)	24 (1,*)		10.6
		22 (3,*)	23 (1,*)		10.5
		21 (3,*)	22 (1,*)		10.0-10.1
		20 (3,*)	21 (1,*)		9.5-9.6
		19 (3,*)	20 (1,*)		9
		18 (3,*)	19 (1,*)
		17 (3,*)	18 (1,*)
		16 (3,*)	17 (1,*)
		15 (3,*)	16 (1,*)
		14 (3,*)	15 (1,*)
		13 (3,*)	14
		12 (3,*)	13
		11 (3,*)	12
		10 (3,*)	11
		9 (3,*)	10
		8 (3,*)	9
		7 (3,*)	8
		6 (3,*)	7
		5 (3,*)	6
		4 (3,*)	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	94	10 (1,*)	64	94	92	11	12.12 (1,*)	15.0	10.4 (1,4)	7.12 (1,*)	2.5 (3,*)
14.5-14.8		4.4.3-4.4.4 (1,*)	7	12.1			10		14.0 (1,*)
14.0-14.4		4.4 (1,*)		12					13.0 (1,*)
13.4-13.7 (2)		4.2-4.3 (1,*)		11.5					12.0 (1,*)
Show all
13.3 (2)		4.1 (1,*)		11.1					11.1-11.2 (1,*)
13.2 (2)		4 (1,*)		11					10.1 (1,*)
13.0-13.1 (2)		3		10					9.2 (1,*)
12.2-12.5 (2)		2.3							8.2 (1,*)
12.0-12.1 (2)		2.2							7.2-7.4 (1,*)
11.3-11.4 (2)		2.1							6.2-6.4 (1,*)
11.0-11.2 (2)									5.0-5.4 (1,*)
10.3 (2)									4 (1,*)
10.0-10.2 (2)
9.3 (2)
9.0-9.2 (2)
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

1. Only supports the deprecated :-webkit-any() pseudo-class

2. Only supports the deprecated :-webkit-any() and :matches() pseudo-classes

3. Only supports the deprecated :-moz-any() pseudo-class.

4. Support for :is() can be enabled with the Experimental Web Platform features flag

^* Partial support with prefix.

Resources

• WebKit blog post about adding `:matches()` and other Selectors Level 4 features
• Chrome support bug for :is()
• MDN Web Docs - CSS :is()
• Codepen - Modern tests
• JS Bin - Legacy tests