- A CSS property that is prefixed with
--, like--example-name, and whose value can be used in other declarations using thevar()function. Custom properties are scoped to the element(s) they are declared on, and participate in the cascade: The value of a custom property is that from the declaration decided by the cascading algorithm. Custom properties are also known as CSS variables. ← MDN Web Docs ↑ w3.org/TR/css-variables-1
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