Deeplearningbook.org W3C HTML Markup Validation
HTML markup errors and warnings
(Rescan now...)
Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
Internal encoding declaration “iso-8859-1” disagrees with the actual encoding of the document (“utf-8”).
Bad value “text/html; charset=ISO-8859-1” for attribute “content” on element “meta”: “iso-8859-1” is not a preferred encoding name. The preferred label for this encoding is “windows-1252”.
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
The “center” element is obsolete. Use CSS instead.
Named character reference was not terminated by a semicolon. (Or “&” should have been escaped as “&”.)
The “tt” element is obsolete. Use CSS instead.
Element “ul” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Element “li” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
Stray end tag “ul”.
Element “p” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
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