World-Wide Web (CSS) An extension to
HTML to allow styles, e.g. colour,
font, size to be specified for certain elements of a
hypertext document. Style information can be included in-line in the HTML file or in a separate CSS file (which can then be easily shared by multiple HTML files). Multiple levels of CSS can be used to allow selective overriding of styles.
(https://w3.org/Style/CSS/).
(2000-07-26)