Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
Attribute “xmlns:fb” 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The “profile” attribute on the “head” element is obsolete.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.
Element “div” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Malformed byte sequence: “f3”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Duplicate attribute “alt”.
Element “ul” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
No “li” element in scope but a “li” end tag seen.
The “align” attribute on the “div” element is obsolete. Use CSS instead.
End tag “h1” seen, but there were open elements.
Unclosed element “a”.
Element “form” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Bad element name “fb:like-box”: Code point “U+003A” is not allowed
The “clear” attribute on the “br” element is obsolete. Use CSS instead.
Element “table” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
The “width” attribute on the “table” element is obsolete. Use CSS instead.
The “cellpadding” attribute on the “table” element is obsolete. Use CSS instead.
The “cellspacing” attribute on the “table” element is obsolete. Use CSS instead.
The “border” attribute on the “table” element is obsolete. Use CSS instead.
The “valign” attribute on the “td” element is obsolete. Use CSS instead.
The “align” attribute on the “td” element is obsolete. Use CSS instead.
Warnings:
Attribute with the local name “xmlns:fb” is not serializable as XML 1.0.
The “border” attribute is obsolete.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The “language” attribute on the “script” element is obsolete.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.
Element name “fb:like-box” cannot be represented as XML 1.0.
Poland PL