The CSS.registerProperty() static method and the @property CSS at-rule register custom properties for which types and behaviors can be defined.

Compatibility

• Chrome 85 Released on 2020-08-25
• Chrome Android 85 Released on 2020-08-25
• Edge 85 Released on 2020-08-27
• Firefox ❌ Search for bugs Search for standards position
• Firefox for Android ❌ Search for bugs Search for standards position
• Safari 16.4 Released on 2023-03-27
• Safari on iOS 16.4 Released on 2023-03-27

BCD data

• api.CSS.registerProperty_static
• api.CSSPropertyRule
• api.CSSPropertyRule.inherits
• api.CSSPropertyRule.initialValue
• api.CSSPropertyRule.name
• api.CSSPropertyRule.syntax
• css.at-rules.property
• css.at-rules.property.inherits
• css.at-rules.property.initial-value
• css.at-rules.property.syntax