CSS User Interface is a CSS module that allows to define the rendering and functionality of user interface related features. Reference Preferences box-sizing cursor outline outline-width outline-style outline-color outline-offset resize text-overflow nav-down nav-left nav-right nav-up Guides Using URL values for the cursor property Explains and shows how URL can be used with the cursor property to produce custom cursors. Specifications Specification Status Comment CSS Basic User Interface Module Level 3 Candidate Recommendation CSS Level 2 (Revision 1) Recommendation Initial definition Browser compatibility Desktop Mobile Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit) Basic support 1.0 1.5 (1.8) 8.0 7.0 1.2 (125) Feature Android Firefox Mobile (Gecko) IE Phone Opera Mobile Safari Mobile Basic support 1.0 1.0 (1.8) 8.0 6.0 3.1