ICssGroupingRule public interface ICssGroupingRule : ICssRule Represents any at (grouping) CSS rule. Documentation Code using AngleSharp.Attributes; namespace AngleSharp.Dom.Css { [DomName("CSSGroupingRule")] public interface ICssGroupingRule : ICssRule { [DomName("cssRules")] ICssRuleList Rules { get; } [DomName("insertRule")] int Insert(string rule, int index); [DomName("deleteRule")] void RemoveAt(int index); } }