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CSS

The CSS interface holds useful CSS-related methods. No object with this interface are implemented: it contains only static methods and therefore is a utilitarian interface.

Properties

The CSS interface is a utility interface and no object of this type can be created: only static properties are defined on it.

Static properties

CSS.paintWorklet: Provides access to the Worklet responsible for all the classes related to painting.

Methods

The CSS interface is a utility interface and no object of this type can be created: only static methods are defined on it.

Static methods

No inherited static methods.

CSS.supports(): Returns a Boolean indicating if the pair property-value, or the condition, given in parameter is supported.

CSS.escape(): Can be used to escape a string mostly for use as part of a CSS selector.

Specifications

Specification	Status	Comment
CSS Painting API Level 1 The definition of 'paintWorklet' in that specification.	Working Draft	Adds the `paintWorklet` static property.
CSS Object Model (CSSOM) The definition of 'CSS' in that specification.	Working Draft	Adds the `escape()` static method.
CSS Conditional Rules Module Level 3 The definition of 'CSS' in that specification.	Candidate Recommendation	Initial definition

Browser compatibilityUpdate compatibility data on GitHub

	Desktop
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari
Basic support	28	Yes	22 22 20 Disabled Disabled From version 20: this feature is behind the `layout.css.supports-rule.enabled` preference. To change preferences in Firefox, visit about:config.	No	12.1	No
`ch`	66	No	No	No	53	No
`cm`	66	No	No	No	53	No
`deg`	66	No	No	No	53	No
`dpcm`	66	No	No	No	53	No
`dpi`	66	No	No	No	53	No
`dppx`	66	No	No	No	53	No
`em`	66	No	No	No	53	No
`escape`	46	?	31	No	No	No
`ex`	66	No	No	No	53	No
`fr`	66	No	No	No	53	No
`grad`	66	No	No	No	53	No
`Hz`	66	No	No	No	53	No
`in`	66	No	No	No	53	No
`ic`	No	No	No	No	No	No
`kHz`	66	No	No	No	53	No
`lh`	No	No	No	No	No	No
`mm`	66	No	No	No	53	No
`ms`	66	No	No	No	53	No
`number`	66	No	No	No	53	No
`paintWorklet`	65	No	?	No	52	No
`pc`	66	No	No	No	53	No
`percent`	66	No	No	No	53	No
`pt`	66	No	No	No	53	No
`px`	66	No	No	No	53	No
`Q`	66	No	No	No	53	No
`rad`	66	No	No	No	53	No
`rlh`	No	No	No	No	No	No
`rem`	66	No	No	No	53	No
`s`	66	No	No	No	53	No
`supports`	61 61 28 Version 60 or older didn't support parentheses-less one-argument version.	Partial Partial Edge doesn't support parentheses-less one-argument version.	55 55 22 Version 54 or older didn't support parentheses-less one-argument version. 20 Disabled Disabled From version 20: this feature is behind the `layout.css.supports-rule.enabled` preference. To change preferences in Firefox, visit about:config.	No	12.1	No
`turn`	66	No	No	No	53	No
`vb`	No	No	No	No	No	No
`vh`	66	No	No	No	53	No
`vi`	No	No	No	No	No	No
`vmax`	66	No	No	No	53	No
`vw`	66	No	No	No	53	No
`wmin`	66	No	No	No	53	No

	Mobile
	Android webview	Chrome for Android	Edge Mobile	Firefox for Android	Opera for Android	iOS Safari	Samsung Internet
Basic support	66	Yes	Yes	22 22 20 Disabled Disabled From version 20: this feature is behind the `layout.css.supports-rule.enabled` preference. To change preferences in Firefox, visit about:config.	12.1	No	?
`ch`	66	66	No	No	53	No	?
`cm`	66	66	No	No	53	No	?
`deg`	66	66	No	No	53	No	?
`dpcm`	66	66	No	No	53	No	?
`dpi`	66	66	No	No	53	No	?
`dppx`	66	66	No	No	53	No	?
`em`	66	66	No	No	53	No	?
`escape`	?	No	?	31	No	No	?
`ex`	66	66	No	No	53	No	?
`fr`	66	66	No	No	53	No	?
`grad`	66	66	No	No	53	No	?
`Hz`	66	66	No	No	53	No	?
`in`	66	66	No	No	53	No	?
`ic`	No	No	No	No	No	No	No
`kHz`	66	66	No	No	53	No	?
`lh`	No	No	No	No	No	No	No
`mm`	66	66	No	No	53	No	?
`ms`	66	66	No	No	53	No	?
`number`	66	66	No	No	53	No	?
`paintWorklet`	Yes	Yes	No	?	52	No	?
`pc`	66	66	No	No	53	No	?
`percent`	66	66	No	No	53	No	?
`pt`	66	66	No	No	53	No	?
`px`	66	66	No	No	53	No	?
`Q`	66	66	No	No	53	No	?
`rad`	66	66	No	No	53	No	?
`rlh`	No	No	No	No	No	No	No
`rem`	66	66	No	No	53	No	?
`s`	66	66	No	No	53	No	?
`supports`	61 61 37 Version 60 or older didn't support parentheses-less one-argument version.	61 61 28 Version 60 or older didn't support parentheses-less one-argument version.	Partial Partial Edge doesn't support parentheses-less one-argument version.	55 55 22 Version 54 or older didn't support parentheses-less one-argument version. 20 Disabled Disabled From version 20: this feature is behind the `layout.css.supports-rule.enabled` preference. To change preferences in Firefox, visit about:config.	12.1	No	?
`turn`	66	66	No	No	53	No	?
`vb`	No	No	No	No	No	No	No
`vh`	66	66	No	No	53	No	?
`vi`	No	No	No	No	No	No	No
`vmax`	66	66	No	No	53	No	?
`vw`	66	66	No	No	53	No	?
`wmin`	66	66	No	No	53	No	?