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).
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”.
Bad value “Content-Style-Type” for attribute “http-equiv” on element “meta”.
Bad value “Content-Script-Type” for attribute “http-equiv” on element “meta”.
Malformed byte sequence: “f6”.
Bad value “top” for attribute “rel” on element “link”: The string “top” is not a registered keyword.
Bad value “expires” for attribute “http-equiv” on element “meta”.
Bad value “pragma” for attribute “http-equiv” on element “meta”.
Malformed byte sequence: “e4”.
Duplicate attribute “id”.
Malformed byte sequence: “fc”.
Malformed byte sequence: “df”.
Malformed byte sequence: “d6”.
Malformed byte sequence: “96”.
Malformed byte sequence: “dc”.
Bad value “maintable ip_content_wrapper” for attribute “id” on element “div”: An ID must not contain whitespace.
Start tag “a” seen but an element of the same type was already open.
Stray end tag “a”.
The “center” element is obsolete. Use CSS instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
Text not allowed in element “iframe” in this context.
The “font” element is obsolete. Use CSS instead.
Bad value “1px” for attribute “width” on element “img”: Expected a digit but saw “p” instead.
Bad value “1px” for attribute “height” on element “img”: Expected a digit but saw “p” instead.
The text content of element “script” was not in the required format: Expected space, tab, newline, or slash but found “{” instead.
The “itemprop” attribute was specified, but the element is not a property of any item.
Warnings:
Attribute “xmlns” is not serializable as XML 1.0.
Potentially bad value “copyright” for attribute “rel” on element “link”: The keyword “copyright” for the “rel” attribute should not be used. Consider using “license” instead.
Empty heading.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
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