Fmf.md W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “revision” for attribute “rel” on element “link”: The string “revision” is not a registered keyword.
Bad value “” for attribute “name” on element “button”: Must not be empty.
Attribute “hreflang” not allowed on element “li” at this point.
Bad value “” for attribute “target” on element “a”: Browsing context name must be at least one character long.
Element “div” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Bad value “00Z” for attribute “datetime” on element “time”: The literal did not satisfy the time-datetime format.
Attribute “about” not allowed on element “article” at this point.
Attribute “content” not allowed on element “span” at this point.
Warnings:
The “banner” role is unnecessary for element “header”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “navigation” role is unnecessary for element “nav”.
The “button” role is unnecessary for element “button”.
The “article” role is unnecessary for element “article”.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
The “form” role is unnecessary for element “form”.
Empty heading.
The “contentinfo” role is unnecessary for element “footer”.
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