The HyperText Markup Language or HTML is the standard markup language for documents designed to be displayed in a web browser.
CSS (Cascading Style Sheets) is a language used for describing the presentation of HTML (Hypertext Markup Language) and XML (Extensible Markup Language) documents. It defines how elements should be displayed, including layout, font, color, and other visual styles. CSS allows web designers to separate content from presentation, making it easier to maintain and update web pages.