Tutorial on Basic Page Structure of HTML Documents

HTTP Headers for HTML 5

This section describes the HTTP headers for HTML 5 and how to set them. (Setting the HTTP headers requires a bit of technical know-how. You may want to skip directly to the Basic HTML Code section. Bookmark this page in your Favorites so you can come back to it later.)

Basic HTML Code AKA skeleton code or boilerplate

Every HTML document should include an <?xml?> declaration, <!DOCTYPE> declaration, html element, head section and body section.

HTML Content Models

The content model of an HTML element determines what type of content may be coded inside it.

HTML Serialization

This section explains HTML Serialization and why the Content-Type header is set to application/xhtml+xml.