HTML5 is a mix of XHTML and HTML4, but with new features. Its syntax ressemble more XHTML than HTML and as thus it is more XML compliant, although you can ignor

HTML5 is a mix of XHTML and HTML4, but with new features. Its syntax ressemble more XHTML than HTML and as thus it is more XML compliant, although you can ignore strict syntax [0]. HTML5 is both XHTML and HTML4 alike, so it is no surprise that is has taken over the market. Note that I don't especially like HTTP/2 and believe that a hack like SPDY should not make it to a standard. More time and care should be made to make a central protocol like HTTP (central in that it is used alot). [0] Source: http://www.techrepublic.com/blog/10-things/10-things-you-should-know-about-html5/ http://www.techrepublic.com/blog/10-things/10-things-you-sho... >Instead, the HTML5 spec is written so that you can write HTML5 with strict XML syntax and it will work