Perfectomobile.com W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Errors:
A document must not include both a “meta” element with an “http-equiv” attribute whose value is “content-type”, and a “meta” element with a “charset” attribute.
Attribute “about” not allowed on element “meta” at this point.
Bad value “button” for attribute “type” on element “a”: Subtype missing.
Attribute “about” not allowed on element “section” at this point.
Attribute “content” not allowed on element “span” at this point.
Attribute “about” not allowed on element “li” at this point.
Attribute “about” not allowed on element “div” at this point.
No “p” element in scope but a “p” end tag seen.
Attribute “about” not allowed on element “article” at this point.
The “for” attribute of the “label” element must refer to a non-hidden form control.
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