HTML, CSS, and JavaScript — Web Design (Codecademy) Codecademy offers interactive courses that are suitable for web designing. This course provides an overview of the fundamental building blocks ...

CSS, or Cascading Style Sheets, defines the look and formatting of that HTML. Both are essential to coding your own website, and here's how to get acquainted with them.

While HTML, CSS and JavaScript are powerful tools, they tend to run out of steam with development of advanced web applications that store data on the client side and manage complex state transitions.