HTML5 study notes 1_html/css_WEB-ITnose

1. Overview of HTML5

The latest version of hypertext markup language after html4 and xhtml1.0.
The three most important technologies: html5 core specification (tag element), CSS3, JavaScript
Released in 2008, mainly to complete functions.
Features: 1. Backwards compatible; 2. User first; 3. Simplify complexity; 4. Plug-in-free paradigm (flash plug-in); 5. Access versatility; 6. Reference semantics; 7. Introduce native media support; 8. Introduce programmable content;
Development tools ：sublime text3, Soda Dark3 software interface theme. < ;head> ;

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Element tag
1 Single tag
2. Double tag
Element, attribute, value, text

head element //The page is invisible
Used to contain metadata content and provide information to the browser. Metadata includes: ,,