What is the most common code for websites?

The most common code for websites is HTML, short for Hypertext Markup Language. HTML provides the structure and layout of a webpage, defining elements like headings, paragraphs, images, and links. In practice, most modern websites also use CSS for styling and JavaScript for interactivity, but HTML remains the core building block. Without it, browsers would not be able to display content properly. Even when using no-code platforms, HTML is still generated in the background to ensure proper rendering and function. It continues to be universal in web development.