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The focus of this specification is readability and ease of access. Unlike the full HTML specification, this "web developer edition" removes information that only browser vendors need know.

Cascading Style Sheets (CSS) is a stylesheet language used to describe the presentation of a document written in HTML or XML (including various XML languages like SVG or XHTML). CSS is one of the core languages of the open web and has a standardized W3C specification. Developed in levels, CSS1 is now obsolete, CSS2.1 a recommendation and CSS3, now split into smaller modules, is progressing on the standard track. The first early drafts of CSS4 modules are being written.

"CSS2 allows you to specify stylesheet for specific media type such as screen or print. Now CSS3 makes it even more efficient by adding media queries. You can add expressions to media type to check for certain conditions and apply different stylesheets."

Our users use the web to get things done. As a consequence, time is of the essence. The choice of which specific tool (sites) they use is heavily influenced by just how quickly that tool accomplishes their goals. Therefore, optimize your websites to load as quickly as possible.

A resource for developers looking to put HTML5 to use today, including information on specific features and when to use them in your apps.

Mobile devices such as smartphones and tablets usually have a capacitive touch-sensitive screen to capture interactions made with the user's fingers. As the mobile web evolves to enable increasingly sophisticated applications, web developers need a way to handle these events. For example, nearly any fast-paced game requires the player to press multiple buttons at once, which, in the context of a touchscreen, implies multi-touch. Apple introduced their touch events API in iOS 2.0. Android has been catching up to this de-facto standard and closing the gap. Recently a W3C working group has come together to work on this touch events specification. In this article I'll dive into the touch events API provided by iOS and Android devices, explore what sorts of applications you can build, present some best practices, and cover useful techniques that make it easier to develop touch-enabled applications.