CSS – Cascading Style Sheets

Cascading Style Sheets is a style sheet language used for describing the presentation of a document written in a markup language such as HTML or XML. CSS is a cornerstone technology of the World Wide Web, alongside HTML and JavaScript.

Where can you learn CSS?

CSS Tutorial by W3Schools	Learn CSS by web.dev
Learn CSS in 21 Days by GeeksforGeeks	Learn CSS in 11 Hours by freecodecamp