O'Reilly logo

CSS Pocket Reference, 4th Edition by Eric A. Meyer

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

URIs

A URI value (<uri>) is a reference to a file such as a graphic or another style sheet. CSS defines a URI as relative to the style sheet that contains it. URI stands for Uniform Resource Identifier, which is the more recent name for URLs. (Technically, URLs are a subset of URIs.) In CSS, which was first defined when URIs were still called URLs, this means that references to URIs will actually appear in the form url(<uri>). Fun!

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required