CSS --* Custom Property
Example
:root {
--first-color: red;
--bg-color: green;
--width: 150px;
}
p {
color: var(--first-color);
background: var(--bg-color);
width: var(--width);
}Meaning
The --* custom property names that are prefixed with --, like --exampleName, represent custom properties that contain a value that can be used in other declarations using the var() function.
Note: Custom property names are case sensitive: --my-color will be treated as a separate custom property to --My-color.
| Default value: | (default value of the property) |
| Inherited: | Yes |
| Animatable: | discrete |
| Version: | CSS3 |
| JavaScript syntax: | |
Standard Syntax
:root {
--*: css property value(s) |initial|inherit|revert|revert-layer|unset;
}Browser Support
The numbers in the table specify the first browser version that fully supports the property.
Status
Property Values
The following table describes the values of this property.
| Value | Description |
|---|---|
| css property value(s) | It represents the entirety of what a valid declaration can have as its value. |
| initial | Sets this property to its default value. |
| inherit | If specified, the associated element takes the computed value of its parent element animation-delay property. |
| revert | Reverts the cascaded value of the property from its current value to the value the property |
| revert-layer | Rollback styles to the ones specified in previous cascade layers. |
| unset | Resets a property to its inherited value if the property naturally inherits from its parent, and to its initial value if not. |
Default CSS Property Values
selectors {
--*: (default value of the property);
}