Cascading Style Sheets are a way to describe the presentation of a web page. It’s one of the core technologies of modern web development, alongside HTML and JavaScript.
Sub-pages
Classes
Pseudo-classes function similarly to classes without explicitly being declared in the HTML document. All pseudo-classes are prefixed by a :
to distinguish from regular classes:
:root
applies to the root element of the document. This is usuallyhtml
(so they function the same).