CSS
        
        
          
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                  Widely available
                
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      This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2015.
* Some parts of this feature may have varying levels of support.
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.
Static properties
- CSS.highlights
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Provides access to the HighlightRegistryused to style arbitrary text ranges using the CSS Custom Highlight API.
- CSS.paintWorkletExperimental Secure context
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Provides access to the Worklet responsible for all the classes related to painting. 
Instance 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 methods
No inherited static methods.
- CSS.registerProperty()
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Registers custom properties, allowing for property type checking, default values, and properties that do or do not inherit their value. 
- CSS.supports()
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Returns a boolean value indicating if the pair property-value, or the condition, given in parameter is supported. 
- CSS.escape()
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Can be used to escape a string mostly for use as part of a CSS selector. 
- CSS factory functions
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Can be used to return a new CSSUnitValuewith a value of the parameter number of the units of the name of the factory function method used.jsCSS.em(3); // CSSUnitValue {value: 3, unit: "em"}
Instance methods
The CSS interface is a utility interface and no object of this type can be created: only static methods are defined on it.
Specifications
| Specification | 
|---|
| CSS Object Model (CSSOM)> # namespacedef-css> | 
Browser compatibility
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