Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The initial-value
CSS descriptor is required when using the @property
at-rule unless the syntax accepts any valid token stream. It sets the initial-value for the property.
The value chosen as the initial-value
must parse correctly according to the syntax definition. Therefore, if syntax is <color>
then the initial-value must be a valid color
value.