Prepar3d.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
Bad value “https://www.w3.org/1999/xhtml/” for the attribute “xmlns” (only “http://www.w3.org/1999/xhtml” permitted here).
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
The “align” attribute on the “img” element is obsolete. Use CSS instead.
No “p” element in scope but a “p” end tag seen.
Duplicate ID “license_option_button”.
End tag “div” seen, but there were open elements.
Unclosed element “form”.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
The “border” attribute on the “table” element is obsolete. Use CSS instead.
The “align” attribute on the “td” element is obsolete. Use CSS instead.
Stray start tag “script”.
Warnings:
Attribute “xmlns” is not serializable as XML 1.0.
The first occurrence of ID “license_option_button” was here.
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.
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