CssStartingStyleRule Class
https://drafts.csswg.org/css-transitions-2/#the-cssstartingstylerule-interface
public sealed class CssStartingStyleRule : CssGroupingRule- Inheritance
CssGroupingRuleCssStartingStyleRule
Meziantou.FrameworkMeziantou.Frameworkhttps://drafts.csswg.org/css-transitions-2/#the-cssstartingstylerule-interface
public sealed class CssStartingStyleRule : CssGroupingRuleCssGroupingRule CssStartingStyleRule