Use this handy, simplified guide to quickly learn HTML and CSS -- a foundation of modern web development.

jsFiddle lets developers play with the three core elements of Web development. Check out this powerful application for rapid prototyping and testing.

Ryan Boudreaux includes all the code snippets you'll need in this demo of how to create an image hover-preview effect using HTML, CSS, and JavaScript.

We’ll look at three Python web frameworks that follow this paradigm, allowing you to describe front-end code (HTML, CSS, and JavaScript) using back-end Python code.

HTML provides the structure, content and layout, CSS adds style and design, and JavaScript adds functionality and interactivity.