Sggp.org.vn W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
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.
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.
Errors:
The text content of element “time” was not in the required format: The literal did not satisfy the time-datetime format.
Duplicate attribute “target”.
Attribute “position” not allowed on element “div” at this point.
Bad value “25” for attribute “rel” on element “a”: The string “25” is not a registered keyword.
Attribute “tag” not allowed on element “a” at this point.
Bad value “16” for attribute “rel” on element “a”: The string “16” is not a registered keyword.
Bad value “10” for attribute “rel” on element “a”: The string “10” is not a registered keyword.
Viet Nam VN