Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
Attribute “xmlns:og” not allowed here.
A document must not include more than one “meta” element with a “http-equiv” attribute whose value is “content-type”.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Bogus comment.
Attribute “vspace” not allowed on element “iframe” at this point.
Attribute “hspace” not allowed on element “iframe” 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The “scrolling” attribute on the “iframe” element is obsolete.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The “frameborder” attribute on the “iframe” element is obsolete.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The “marginwidth” attribute on the “iframe” element is obsolete. Use CSS instead.
The “marginheight” attribute on the “iframe” element is obsolete. Use CSS instead.
Bad value “_blank _parent” for attribute “target” on element “a”: Reserved keyword “blank _parent” used.
Start tag “a” seen but an element of the same type was already open.
Stray end tag “a”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Saw “<!--” within a comment. Probable cause: Nested comment (not allowed).
Duplicate attribute “target”.
No space between attributes.
Bad value “true” for attribute “async” on element “script”.
Element “script” must not have attribute “async” unless attribute “src” is also specified.
The “width” attribute on the “table” element is obsolete. Use CSS instead.
The “valign” attribute on the “td” element is obsolete. Use CSS instead.
End tag “td” seen, but there were open elements.
Unclosed element “span”.
Warnings:
Attribute with the local name “xmlns:og” is not serializable as XML 1.0.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
The “border” attribute is obsolete.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The “language” attribute on the “script” element is obsolete.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.
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