The CSSImportRule interface represents an @import at-rule.

Inherits properties from its ancestor CSSRule.

CSSImportRule.href Read only

Returns the URL specified by the @import rule.

CSSImportRule.layerName Read only

Returns the name of the cascade layer declared in the @import rule, the empty string if the layer is anonymous, the or null if the rule doesn't declare any.

CSSImportRule.media

Returns the value of the media attribute of the associated stylesheet.

CSSImportRule.styleSheet Read only

Returns the associated stylesheet.

CSSImportRule.supportsText Read only Experimental

Returns the supports condition specified by the @import rule.

Inherits methods from its ancestor CSSRule.

The document includes a single stylesheet which contains a single @import rule. Therefore the first item in the list of CSS rules will be a CSSImportRule.

@import url("style.css") screen;

const myRules = document.styleSheets[0].cssRules;
console.log(myRules[0]); // A CSSImportRule instance object