Refer
http://blogs.msdn.com/b/webdevtools/archive/2011/01/27/html5-amp-css3-in-visual-studio-2010-sp1.aspx
http://blogs.msdn.com/b/webdev/archive/2011/01/27/html5-amp-css3-in-visual-studio-2010-sp1.aspx
http://www.codeproject.com/Tips/543391/HTML5-for-Asp-net-Csharp-Developers
http://visualstudiomagazine.com/articles/2011/09/01/pfcov_html5.aspx