Errors:
Obsolete doctype. Expected “<!DOCTYPE html>”.
Attribute “xmlns:og” not allowed here.
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The “profile” attribute on the “head” element is obsolete.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 “screen, projection” for attribute “media” on element “link”: Deprecated media type “projection”. For guidance, see the Media Types section in the current Media Queries specification.
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.
The “font” element is obsolete. Use CSS instead.
Element “div” not allowed as child of element “font” in this context. (Suppressing further errors from this subtree.)
The “width” attribute on the “table” element is obsolete. Use CSS instead.
The “cellspacing” attribute on the “table” element is obsolete. Use CSS instead.
The “cellpadding” attribute on the “table” element is obsolete.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The “border” attribute on the “table” element is obsolete.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The “valign” attribute on the “td” element is obsolete.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The “width” attribute on the “td” element is obsolete. Use CSS instead.
Stray end tag “div”.
Table column 2 established by element “td” has no cells beginning in it.
Stray end tag “tr”.
Duplicate ID “best_productnews”.
End tag “b” violates nesting rules.
End tag “a” violates nesting rules.
Stray start tag “td”.
Bad value “Đã đăng ký bộ công thương” for attribute “rel” on element “a”: The string “Đã” is not a registered keyword.
Stray end tag “td”.
Bad value “javascript” for attribute “lang” on element “script”: Subtags must not exceed 8 characters in length.
End tag for “body” seen, but there were unclosed elements.
Unclosed element “div”.
Warnings:
Attribute with the local name “xmlns:og” is not serializable as XML 1.0.
Attribute with the local name “xmlns:fb” is not serializable as XML 1.0.
Text run is not in Unicode Normalization Form C.
The value of attribute “content” on element “meta” from namespace “http://www.w3.org/1999/xhtml” is not in Unicode Normalization Form C.
Consider avoiding viewport values that prevent users from resizing documents.
A table row was 1 columns wide, which is less than the column count established by the first row (10).
The value of attribute “title” on element “a” from namespace “http://www.w3.org/1999/xhtml” is not in Unicode Normalization Form C.
The value of attribute “alt” on element “img” from namespace “http://www.w3.org/1999/xhtml” is not in Unicode Normalization Form C.
The first occurrence of ID “best_productnews” was here.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
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