HTML5 Logo — HTML5 ( H yper T ext M arkup L anguage , version 5) is the fifth major revision of the basic language of the World Wide Web , HTML . Specifies two variants HTML5 syntax to HTML: a “classic” HTML ( text / html ), the variant known as HTML5 and a variant XHTML syntax known as XHTML5 which must be served as XML (XHTML) (application / xhtml + xml). 1 2 This is the first time HTML and XHTML have been developed in parallel.
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It is still in experimental mode, which indicates the W3C itself, although it is used by many web developers for its progress, improvements and benefits. Not being recognized by older versions of browsers for their new label, you are encouraged to common upgrade to newer, to enjoy the full potential that brings HTML5. The development of this code is governed by the Consortium W3C . More