The building blocks of the web are web pages that are formatted in?

The building blocks of the web are web pages that are formatted in Hypertext Markup Language (HTML). HTML is a markup language used to create the structure and content of web pages. It is used to define the layout, headings, paragraphs, links, images, and other elements of a web page.

HTML is a markup language because it uses tags to mark up or define different parts of the content on a web page. For example, the <h1> tag is used to define a top-level heading, while the <p> tag is used to define a paragraph of text. Other tags can be used to define links, images, tables, forms, and other elements.

HTML is typically combined with Cascading Style Sheets (CSS) and JavaScript to create more dynamic and visually appealing web pages. CSS is used to define the presentation or styling of a web page, while JavaScript is used to add interactivity and dynamic functionality. Together, these technologies form the basis of modern web development.