The definitive guide of cross-browser/cross-device Web Development

Support and optimize your Web pages for 99% of browsers and devices (IE 6+, Firefox 3+, Chrome 11+, Opera 10+, Safari 4+, desktops, tablets, phones...)

Discover the correct use, interactions, browser support, known issues and best tricks for each part of HTML5, CSS3 and JavaScript languages.

Detect unsupported features and use alternative solutions, graceful degradations or the best polyfills available online.

Customize your very own HTML5 template, and discover many other life-easing tools!

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