CSSRule
readonly
CSSRuleList
cssRules
An array (technically, a CSSRuleList) of all the rules nested within this @media rule block.
readonly
MediaList
media
The list of media types to which the nested rules apply.
deleteRule( )
Deletes the nested rule at the specified position.
insertRule( )
Inserts a new rule at the specified position within this @media rule block.
This interface represents an @media rule, and all of its nested rules, in a CSS style sheet. It defines methods that allow you to insert and delete nested rules. Consult a CSS reference for details.