What code is used for website design?

Websites are built from a few core layers. HTML structures the content, CSS controls styling and layout, and JavaScript adds interactivity and application behavior. Many modern sites use frameworks (like React) to manage components and state, plus build tools that optimize performance. On the backend, you might see Node, PHP, Python, or other systems depending on the platform. The “right” stack depends on what you need to update, how fast the site must load, and what integrations are required.