HTML stands for HyperText Markup Language. It is the standard markup language for creating web pages and web applications. HTML describes the structure of a web page semantically and originally included cues for the appearance of the document.

CSS stands for Cascading Style Sheets. It is a style sheet language used for describing the presentation of a document written in HTML or XML. CSS is designed to enable the separation of presentation and content, including layout, colors, and fonts.

HTML provides the structure and content of a web page, while CSS controls its style and layout. When a web browser reads an HTML document, it also reads the associated CSS, which tells the browser how to display the HTML elements on screen, in print, or in other media.

Semantic HTML provides several benefits:

To make a website responsive, you can: