Leaderkid.com.tw W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Duplicate attribute “itemprop”.
Attribute “datetime” not allowed on element “span” at this point.
The “itemtype” attribute must not be specified on elements that do not have an “itemscope” attribute specified.
Malformed byte sequence: “e5”.
Duplicate ID “fb-root”.
Stray end tag “div”.
Warnings:
The “banner” role is unnecessary for element “header”.
Document uses the Unicode Private Use Area(s), which should not be used in publicly exchanged documents. (Charmod C073)
The “navigation” role is unnecessary for element “nav”.
The “main” role is unnecessary for element “main”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “complementary” role is unnecessary for element “aside”.
The “contentinfo” role is unnecessary for element “footer”.
The first occurrence of ID “fb-root” was here.
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