Lyhocdongphuong.org.vn W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Attribute “xmlns:og” not allowed here.
Attribute “xmlns:fb” 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Using the “meta” element to specify the document-wide default language is obsolete.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.
Duplicate ID “max-menu-page”.
Duplicate ID “nav-menu-page”.
Stray end tag “nav”.
Bad value “” for attribute “src” on element “img”: Must be non-empty.
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.
The first occurrence of ID “max-menu-page” was here.
The first occurrence of ID “nav-menu-page” was here.
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.
Text run is not in Unicode Normalization Form C.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
This document appears to be written in Vietnamese. Consider adding “lang="vi"” (or variant) to the “html” start tag.
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