CSSKeyframesRule
An object representing a complete set of keyframes for a CSS animation. It corresponds to the contains of a whole @keyframes at-rule. It implements the CSSRule interface with a type value of 7 (CSSRule.KEYFRAMES_RULE).
interface CSSKeyframesRule extends CSSRule {
readonly cssRules: CSSRuleList;
name: string;
appendRule(rule: string): void;
deleteRule(select: string): void;
findRule(select: string): CSSKeyframeRule | null;
}var CSSKeyframesRule: {
prototype: CSSKeyframesRule;
new (): CSSKeyframesRule;
};