Nghiencuulichsu.com 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 “title” on element “link” from namespace “http://www.w3.org/1999/xhtml” 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.
The “banner” role is unnecessary for element “header”.
The value of attribute “title” on element “a” from namespace “http://www.w3.org/1999/xhtml” is not in Unicode Normalization Form C.
The “navigation” role is unnecessary for element “nav”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The value of attribute “value” on element “input” from namespace “http://www.w3.org/1999/xhtml” is not in Unicode Normalization Form C.
The “contentinfo” role is unnecessary for element “footer”.
The first occurrence of ID “_wpnonce” was here.
Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).
Errors:
Bad value “droid sans-css” for attribute “id” on element “link”: An ID must not contain whitespace.
Bad value “droid serif-css” for attribute “id” on element “link”: An ID must not contain whitespace.
Duplicate ID “_wpnonce”.
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