Errors:
Obsolete doctype. Expected “<!DOCTYPE html>”.
Attribute “xmlns:b” not allowed here.
Attribute “xmlns:data” not allowed here.
Attribute “xmlns:expr” not allowed here.
Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.
Stray end tag “meta”.
Bad value “service.post” for attribute “rel” on element “link”: The string “service.post” is not a registered keyword.
A document must not include more than one “meta” element with its “name” attribute set to the value “description”.
Bad value “none” for attribute “media” on element “link”: Media query ended prematurely.
Bad value “56px; ” for attribute “height” on element “img”: Expected a digit but saw “p” instead.
Bad value “300px; ” for attribute “width” on element “img”: Expected a digit but saw “p” instead.
Attribute “imageanchor” not allowed on element “a” at this point.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
The “color” attribute on the “hr” element is obsolete. Use CSS instead.
The “size” attribute on the “hr” element is obsolete. Use CSS instead.
The “width” attribute on the “hr” element is obsolete. Use CSS instead.
The “align” attribute on the “div” element is obsolete. Use CSS instead.
Attribute “vinput” not allowed on element “input” at this point.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
The “center” element is obsolete. Use CSS instead.
Bad value “Column 1” for attribute “id” on element “div”: An ID must not contain whitespace.
Bad value “Column 2” for attribute “id” on element “div”: An ID must not contain whitespace.
Bad value “Column 3” for attribute “id” on element “div”: An ID must not contain whitespace.
Warnings:
Attribute with the local name “xmlns:b” is not serializable as XML 1.0.
Attribute with the local name “xmlns:data” is not serializable as XML 1.0.
Attribute with the local name “xmlns:expr” is not serializable as XML 1.0.
The “name” attribute is obsolete. Consider putting an “id” attribute on the nearest container instead.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.
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