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.

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.

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.