CSS Containment

The CSS contain property lets developers limit the scope of the browser's styles, layout and paint work for faster and more efficient rendering.

Spec	https://www.w3.org/TR/css-contain-1/#contain-property
Status	W3C Recommendation

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	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	70
	84	82	84	9.1	69
	83	81	83	9	68
	81	80	81	8	67
	80	79	80	7.1	66
	79	78	79	7	65
	18	77	78	6.1	64
	17	76	77	6	63
	16	75	76	5.1	62
	15	74	75	5	60
	14	73	74	4	58
	13	72	73	3.2	57
	12	71	72	3.1	56
		70	71		55
		69	70		54
		68 ⁽¹⁾	69		53
		67 ⁽¹⁾	68		52
		66 ⁽¹⁾	67		51
		65 ⁽¹⁾	66		50
		64 ⁽¹⁾	65		49
		63 ⁽¹⁾	64		48
		62 ⁽¹⁾	63		47
		61 ⁽¹⁾	62		46
		60 ⁽¹⁾	61		45
		59 ⁽¹⁾	60		44
		58 ⁽¹⁾	59		43
		57 ⁽¹⁾	58		42
		56 ⁽¹⁾	57		41
		55 ⁽¹⁾	56		40
		54 ⁽¹⁾	55		39
		53 ⁽¹⁾	54		38
		52 ⁽¹⁾	53		37
		51 ⁽¹⁾	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	41		25
		39	40		24
		38	39		23
		37	38		22
		36	37		21
		35	36		20
		34	35		19
		33	34		18
		32	33		17
		31	32		16
		30	31		15
		29	30		12.1
		28	29		12
		27	28		11.6
		26	27		11.5
		25	26		11.1
		24	25		11
		23	24		10.6
		22	23		10.5
		21	22		10.0-10.1
		20	21		9.5-9.6
		19	20		9
		18	19
		17	18
		16	17
		15	16
		14	15
		13	14
		12	13
		11	12
		10	11
		9	10
		8	9
		7	8
		6	7
		5	6
		4	5
		3.6	4
		3.5
		3
		2

Notes

Can be enabled in older Gecko engines with the layout.css.contain.enabled flag in about:config
Partially supported in Firefox by enabling "layout.css.contain.enabled" in about:config

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