Booksmedicos.org W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
The “profile” attribute on the “head” element is obsolete. To declare which “meta” terms are used in the document, instead register the names as meta extensions. To trigger specific UA behaviors, use a “link” element instead.
Bad value “screen, projection” for attribute “media” on element “link”: Deprecated media type “projection”. For guidance, see the Media Types section in the current Media Queries specification.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Attribute “security” not allowed on element “script” at this point.
Stray end tag “meta”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
The text content of element “script” was not in the required format: Expected space, tab, newline, or slash but found “{” instead.
Duplicate ID “search”.
Duplicate ID “searchform”.
Duplicate ID “s”.
The “center” element is obsolete. Use CSS instead.
No “p” element in scope but a “p” end tag seen.
Warnings:
The first occurrence of ID “search” was here.
The first occurrence of ID “searchform” was here.
The first occurrence of ID “s” was here.
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