The @import rule is used to import one style sheet into another style sheet. This rule also support media queries so that the user can import the media-dependent style sheet. The @import rule must be declared at the top of the document after any @charset declaration.
The @import rule allows to import style rules from other style sheets. The @import keyword must be followed by the URL of the style sheet to include, and a semicolon. A string is also allowed in place of the URL; it will be interpreted as if it had url(...) around it.Property Values:
Import the "navigation.css" style sheet into the current style sheet: