Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
Attribute “xmlns:fb” not allowed here.
Attribute “xmlns:og” not allowed here.
The “profile” attribute on the “head” element is obsolete.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 “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.
No space between attributes.
A slash was not immediately followed by “>”.
“=” in an unquoted attribute value. Probable causes: Attributes running together or a URL query string in an unquoted attribute value.
“"” in an unquoted attribute value. Probable causes: Attributes running together or a URL query string in an unquoted attribute value.
Quote “"” in attribute name. Probable cause: Matching quote missing somewhere earlier.
Bad value “window.open(” for attribute “onsubmit” on element “form”: syntax error
Attribute “http:” not allowed on element “form” at this point.
Attribute “feedburner.google.com” not allowed on element “form” at this point.
Attribute “fb” not allowed on element “form” at this point.
Attribute “a” not allowed on element “form” at this point.
Attribute “mailverify?uri” not allowed on element “form” at this point.
Attribute “true"” not allowed on element “form” at this point.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “allowtransparency” attribute on the “iframe” element is obsolete. Use CSS instead.
Warnings:
Attribute with the local name “xmlns:fb” is not serializable as XML 1.0.
Attribute with the local name “xmlns:og” is not serializable as XML 1.0.
Consider avoiding viewport values that prevent users from resizing documents.
Attribute “http:” is not serializable as XML 1.0.
Attribute “mailverify?uri” is not serializable as XML 1.0.
Attribute “true"” is not serializable as XML 1.0.
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