CSSPageRule
CSSPageRule is an interface representing a single CSS @page rule. It implements the CSSRule interface with a type value of 6 (CSSRule.PAGE_RULE).
interface CSSPageRule extends CSSGroupingRule {
selectorText: string;
readonly style: CSSStyleDeclaration;
}var CSSPageRule: {
prototype: CSSPageRule;
new (): CSSPageRule;
};