The CSS
interface holds useful CSS-related methods. No objects with this interface are implemented: it contains only static methods and is therefore 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
Secure context- 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.registerProperty()
- Registers
custom properties
, allowing for property type checking, default values, and properties that do or do not inherit their value. 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.
CSS factory functions
- Can be used to return a new
CSSUnitValue
with a value of the parameter number of the units of the name of the factory function method used. -
CSS.em(3) // CSSUnitValue {value: 3, unit: "em"}
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 compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
CSS | Chrome Full support 28 | Edge Full support ≤18 | Firefox
Full support
22
| IE No support No | Opera Full support 12.1 | Safari Full support 10 | WebView Android Full support 4.4 | Chrome Android Full support 28 | Firefox Android
Full support
22
| Opera Android Full support 12.1 | Safari iOS Full support Yes | Samsung Internet Android Full support 1.5 |
Hz | Chrome Full support 66 | Edge Full support 79 | Firefox No support No | IE No support No | Opera Full support 53 | Safari No support No | WebView Android Full support 66 | Chrome Android Full support 66 | Firefox Android No support No | Opera Android Full support 47 | Safari iOS No support No | Samsung Internet Android Full support 9.0 |
Q | Chrome Full support 66 | Edge Full support 79 | Firefox No support No | IE No support No | Opera Full support 53 | Safari No support No | WebView Android Full support 66 | Chrome Android Full support 66 | Firefox Android No support No | Opera Android Full support 47 | Safari iOS No support No | Samsung Internet Android Full support 9.0 |
ch | Chrome Full support 66 | Edge Full support 79 | Firefox No support No | IE No support No | Opera Full support 53 | Safari No support No | WebView Android Full support 66 | Chrome Android Full support 66 | Firefox Android No support No | Opera Android Full support 47 | Safari iOS No support No | Samsung Internet Android Full support 9.0 |
cm | Chrome Full support 66 | Edge Full support 79 | Firefox No support No | IE No support No | Opera Full support 53 | Safari No support No | WebView Android Full support 66 | Chrome Android Full support 66 | Firefox Android No support No | Opera Android Full support 47 | Safari iOS No support No | Samsung Internet Android Full support 9.0 |
deg | Chrome Full support 66 | Edge Full support 79 | Firefox No support No | IE No support No | Opera Full support 53 | Safari No support No | WebView Android Full support 66 | Chrome Android Full support 66 | Firefox Android No support No | Opera Android Full support 47 | Safari iOS No support No | Samsung Internet Android Full support 9.0 |
dpcm | Chrome Full support 66 | Edge Full support 79 | Firefox No support No | IE No support No | Opera Full support 53 | Safari No support No | WebView Android Full support 66 | Chrome Android Full support 66 | Firefox Android No support No | Opera Android Full support 47 | Safari iOS No support No | Samsung Internet Android Full support 9.0 |
dpi | Chrome Full support 66 | Edge Full support 79 | Firefox No support No | IE No support No | Opera Full support 53 | Safari No support No | WebView Android Full support 66 | Chrome Android Full support 66 | Firefox Android No support No | Opera Android Full support 47 | Safari iOS No support No | Samsung Internet Android Full support 9.0 |
dppx | Chrome Full support 66 | Edge Full support 79 | Firefox No support No | IE No support No | Opera Full support 53 | Safari No support No | WebView Android Full support 66 | Chrome Android Full support 66 | Firefox Android No support No | Opera Android Full support 47 | Safari iOS No support No | Samsung Internet Android Full support 9.0 |
em | Chrome Full support 66 | Edge Full support 79 | Firefox No support No | IE No support No | Opera Full support 53 | Safari No support No | WebView Android Full support 66 | Chrome Android Full support 66 | Firefox Android No support No | Opera Android Full support 47 | Safari iOS No support No | Samsung Internet Android Full support 9.0 |
escape | Chrome Full support 46 | Edge Full support 79 | Firefox Full support 31 | IE No support No | Opera Full support 33 | Safari Full support 10 | WebView Android Full support 46 | Chrome Android Full support 46 | Firefox Android Full support 31 | Opera Android Full support 33 | Safari iOS Full support 10 | Samsung Internet Android Full support 5.0 |
ex | Chrome Full support 66 | Edge Full support 79 | Firefox No support No | IE No support No | Opera Full support 53 | Safari No support No | WebView Android Full support 66 | Chrome Android Full support 66 | Firefox Android No support No | Opera Android Full support 47 | Safari iOS No support No | Samsung Internet Android Full support 9.0 |
fr | Chrome Full support 66 | Edge Full support 79 | Firefox No support No | IE No support No | Opera Full support 53 | Safari No support No | WebView Android Full support 66 | Chrome Android Full support 66 | Firefox Android No support No | Opera Android Full support 47 | Safari iOS No support No | Samsung Internet Android Full support 9.0 |
grad | Chrome Full support 66 | Edge Full support 79 | Firefox No support No | IE No support No | Opera Full support 53 | Safari No support No | WebView Android Full support 66 | Chrome Android Full support 66 | Firefox Android No support No | Opera Android Full support 47 | Safari iOS No support No | Samsung Internet Android Full support 9.0 |
ic | Chrome No support No | Edge No support No | Firefox No support No | IE No support No | Opera No support No | Safari No support No | WebView Android No support No | Chrome Android No support No | Firefox Android No support No | Opera Android No support No | Safari iOS No support No | Samsung Internet Android No support No |
in | Chrome Full support 66 | Edge Full support 79 | Firefox No support No | IE No support No | Opera Full support 53 | Safari No support No | WebView Android Full support 66 | Chrome Android Full support 66 | Firefox Android No support No | Opera Android Full support 47 | Safari iOS No support No | Samsung Internet Android Full support 9.0 |
kHz | Chrome Full support 66 | Edge Full support 79 | Firefox No support No | IE No support No | Opera Full support 53 | Safari No support No | WebView Android Full support 66 | Chrome Android Full support 66 | Firefox Android No support No | Opera Android Full support 47 | Safari iOS No support No | Samsung Internet Android Full support 9.0 |
lh | Chrome No support No | Edge No support No | Firefox No support No | IE No support No | Opera No support No | Safari No support No | WebView Android No support No | Chrome Android No support No | Firefox Android No support No | Opera Android No support No | Safari iOS No support No | Samsung Internet Android No support No |
mm | Chrome Full support 66 | Edge Full support 79 | Firefox No support No | IE No support No | Opera Full support 53 | Safari No support No | WebView Android Full support 66 | Chrome Android Full support 66 | Firefox Android No support No | Opera Android Full support 47 | Safari iOS No support No | Samsung Internet Android Full support 9.0 |
ms | Chrome Full support 66 | Edge Full support 79 | Firefox No support No | IE No support No | Opera Full support 53 | Safari No support No | WebView Android Full support 66 | Chrome Android Full support 66 | Firefox Android No support No | Opera Android Full support 47 | Safari iOS No support No | Samsung Internet Android Full support 9.0 |
number | Chrome Full support 66 | Edge Full support 79 | Firefox No support No | IE No support No | Opera Full support 53 | Safari No support No | WebView Android Full support 66 | Chrome Android Full support 66 | Firefox Android No support No | Opera Android Full support 47 | Safari iOS No support No | Samsung Internet Android Full support 9.0 |
paintWorklet | Chrome Full support 65 | Edge Full support 79 | Firefox ? | IE No support No | Opera Full support 52 | Safari No support No | WebView Android Full support 65 | Chrome Android Full support 65 | Firefox Android ? | Opera Android Full support 47 | Safari iOS No support No | Samsung Internet Android Full support 9.0 |
pc | Chrome Full support 66 | Edge Full support 79 | Firefox No support No | IE No support No | Opera Full support 53 | Safari No support No | WebView Android Full support 66 | Chrome Android Full support 66 | Firefox Android No support No | Opera Android Full support 47 | Safari iOS No support No | Samsung Internet Android Full support 9.0 |
percent | Chrome Full support 66 | Edge Full support 79 | Firefox No support No | IE No support No | Opera Full support 53 | Safari No support No | WebView Android Full support 66 | Chrome Android Full support 66 | Firefox Android No support No | Opera Android Full support 47 | Safari iOS No support No | Samsung Internet Android Full support 9.0 |
pt | Chrome Full support 66 | Edge Full support 79 | Firefox No support No | IE No support No | Opera Full support 53 | Safari No support No | WebView Android Full support 66 | Chrome Android Full support 66 | Firefox Android No support No | Opera Android Full support 47 | Safari iOS No support No | Samsung Internet Android Full support 9.0 |
px | Chrome Full support 66 | Edge Full support 79 | Firefox No support No | IE No support No | Opera Full support 53 | Safari No support No | WebView Android Full support 66 | Chrome Android Full support 66 | Firefox Android No support No | Opera Android Full support 47 | Safari iOS No support No | Samsung Internet Android Full support 9.0 |
rad | Chrome Full support 66 | Edge Full support 79 | Firefox No support No | IE No support No | Opera Full support 53 | Safari No support No | WebView Android Full support 66 | Chrome Android Full support 66 | Firefox Android No support No | Opera Android Full support 47 | Safari iOS No support No | Samsung Internet Android Full support 9.0 |
registerProperty | Chrome Full support 78 | Edge Full support 79 | Firefox No support No | IE No support No | Opera Full support 65 | Safari No support No | WebView Android Full support 78 | Chrome Android Full support 78 | Firefox Android No support No | Opera Android No support No | Safari iOS No support No | Samsung Internet Android Full support 12.0 |
rem | Chrome Full support 66 | Edge Full support 79 | Firefox No support No | IE No support No | Opera Full support 53 | Safari No support No | WebView Android Full support 66 | Chrome Android Full support 66 | Firefox Android No support No | Opera Android Full support 47 | Safari iOS No support No | Samsung Internet Android Full support 9.0 |
rlh | Chrome No support No | Edge No support No | Firefox No support No | IE No support No | Opera No support No | Safari No support No | WebView Android No support No | Chrome Android No support No | Firefox Android No support No | Opera Android No support No | Safari iOS No support No | Samsung Internet Android No support No |
s | Chrome Full support 66 | Edge Full support 79 | Firefox No support No | IE No support No | Opera Full support 53 | Safari No support No | WebView Android Full support 66 | Chrome Android Full support 66 | Firefox Android No support No | Opera Android Full support 47 | Safari iOS No support No | Samsung Internet Android Full support 9.0 |
supports | Chrome
Full support
61
| Edge
Partial support
12
| Firefox
Full support
55
| IE No support No | Opera Full support 12.1 | Safari Full support 10 | WebView Android
Full support
61
| Chrome Android
Full support
61
| Firefox Android
Full support
55
| Opera Android Full support 12.1 | Safari iOS Full support Yes | Samsung Internet Android
Full support
8.0
|
turn | Chrome Full support 66 | Edge Full support 79 | Firefox No support No | IE No support No | Opera Full support 53 | Safari No support No | WebView Android Full support 66 | Chrome Android Full support 66 | Firefox Android No support No | Opera Android Full support 47 | Safari iOS No support No | Samsung Internet Android Full support 9.0 |
vb | Chrome No support No | Edge No support No | Firefox No support No | IE No support No | Opera No support No | Safari No support No | WebView Android No support No | Chrome Android No support No | Firefox Android No support No | Opera Android No support No | Safari iOS No support No | Samsung Internet Android No support No |
vh | Chrome Full support 66 | Edge Full support 79 | Firefox No support No | IE No support No | Opera Full support 53 | Safari No support No | WebView Android Full support 66 | Chrome Android Full support 66 | Firefox Android No support No | Opera Android Full support 47 | Safari iOS No support No | Samsung Internet Android Full support 9.0 |
vi | Chrome No support No | Edge No support No | Firefox No support No | IE No support No | Opera No support No | Safari No support No | WebView Android No support No | Chrome Android No support No | Firefox Android No support No | Opera Android No support No | Safari iOS No support No | Samsung Internet Android No support No |
vmax | Chrome Full support 66 | Edge Full support 79 | Firefox No support No | IE No support No | Opera Full support 53 | Safari No support No | WebView Android Full support 66 | Chrome Android Full support 66 | Firefox Android No support No | Opera Android Full support 47 | Safari iOS No support No | Samsung Internet Android Full support 9.0 |
vw | Chrome Full support 66 | Edge Full support 79 | Firefox No support No | IE No support No | Opera Full support 53 | Safari No support No | WebView Android Full support 66 | Chrome Android Full support 66 | Firefox Android No support No | Opera Android Full support 47 | Safari iOS No support No | Samsung Internet Android Full support 9.0 |
wmin | Chrome Full support 66 | Edge Full support 79 | Firefox No support No | IE No support No | Opera Full support 53 | Safari No support No | WebView Android Full support 66 | Chrome Android Full support 66 | Firefox Android No support No | Opera Android Full support 47 | Safari iOS No support No | Samsung Internet Android Full support 9.0 |
Legend
- Full support
- Full support
- Partial support
- Partial support
- No support
- No support
- Compatibility unknown
- Compatibility unknown
- Experimental. Expect behavior to change in the future.
- Experimental. Expect behavior to change in the future.
- See implementation notes.
- See implementation notes.
- User must explicitly enable this feature.
- User must explicitly enable this feature.