The page object is a special type of style rule created via an @page CSS rule. In the W3C DOM, this object (known as the CSSPageRule object)

Returns the name of the pseudo-class associated with the @page rule (if any).

Provides the selector of the @page rule (if any).

Returns the style object (of type CSSStyleDeclaration in the W3C DOM) reflecting the style attributes and properties of the @page rule.