HTML has supported multimedia elements—images, video, audio—for many decades, but the latter two required browser plugins ...

Semantic Checker is a new and still experimental Firefox addon (download it here) highlighting semantic elements in the web page you are currently viewing. The tool should be used for on-page analysis ...

HTML (Hypertext Markup Language) is a text-based approach to describing how content contained within an HTML file is structured. This markup tells a web browser how to display text, images and other ...

One of the amazing things about the Web always has been the relative ease with which you can create a site. All you have to do is learn a few HTML tags, create a file that uses those tags, and voilà, ...

This text-based tutorial is intended for people who learn fast through a combination of reading and images — it’s possible to learn HTML and CSS foundations in 15 minutes through this tutorial. For a ...

Keeping track of the ever-evolving HTML5 and CSS 3 support in today’s web browsers can be an overwhelming task. Sure you can use CSS animations to create some whiz-bang effects, but should you? Which ...