ICSSUnknownRule class

The CSSUnknownRule interface represents an at-rule not supported by this user agent.

The ICSSUnknownRule type exposes the following members:

Property	Description
type	The type of the rule, as defined above. The expectation is that binding-specific casting methods can be used to cast down from an instance of the CSSRule interface to the specific derived interface implied by the type.
css_text	The parsable textual representation of the rule. This reflects the current state of the rule and not its initial value.
parent_style_sheet	The style sheet that contains this rule.
parent_rule	If this rule is contained inside another rule (e.g. a style rule inside an @media block), this is the containing rule. If this rule is not nested inside any other rules, this returns null.