XHTML - how extend/create ELEMENT body in my DTD?

Discussion in 'HTML and CSS' started by TheCodingForums, Oct 29, 2019.

  1. TheCodingForums


    Oct 29, 2019
    Likes Received:

    validator.w3.org say me this code not is valid becouse ELEMENT BODY don't reknow my TAG <planet>:
    Code (Text):
    <?xml version="1.0" encoding="utf-8"?>

    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"
    <!ELEMENT planeta (#PCDATA)>

    <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="es">

    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Mis TAGS</title>
    <meta http-equiv="Content-Type" content="application/xhtml+xml; charset=UTF-8" />
    <meta http-equiv="Content-Style-Type" content="text/css" />
    <meta http-equiv="Content-Script-Type" content="text/javascript" />
    <link rel="icon" href="https://google.com/favicon.ico" type="image/x-icon" />
    <style type="text/css">@import url("https://google.com/style.css");</style>
    just I add and declarate this TAG in the DOCTYPE, but previuslly the element BODY is declarated and not include my elements (tags) as <planet>, <star>, <ovni>, etc...

    Some idea about how I can eXtend my tags to this document using the DTD from W3C ?

    I believe I need rewrite the ELEMENT BODY, but I am no't sure.


    TheCodingForums, Oct 29, 2019
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