Warnings:
The value of attribute “content” on element “meta” from namespace “http://www.w3.org/1999/xhtml” is not in Unicode Normalization Form C.
“role="none"” is not yet supported in all browsers. Consider instead either using “role="presentation"” or “role="none presentation"”.
The “heading” role is unnecessary for element “h1”.
The “navigation” role is unnecessary for element “nav”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “article” role is unnecessary for element “article”.
Attribute “twitter"” is not serializable as XML 1.0.
The “contentinfo” role is unnecessary for element “address”.
Errors:
Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.
Bad value “android-touch-icon” for attribute “rel” on element “link”: The string “android-touch-icon” is not a registered keyword.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “112px” for attribute “width” on element “img”: Expected a digit but saw “p” instead.
Attribute “arial-level” not allowed on element “h1” at this point.
Bad value “false” for attribute “autocomplete” on element “input”: The string “false” is not a valid autofill field name.
No “li” element in scope but a “li” end tag seen.
End tag “li” seen, but there were open elements.
Unclosed element “div”.
Stray end tag “div”.
Bad value “__blank” for attribute “target” on element “a”: Reserved keyword “_blank” used.
Element “meta” is missing required attribute “content”.
Element “meta” not allowed as child of element “picture” in this context. (Suppressing further errors from this subtree.)
Bad value “content” for attribute “role” on element “section”.
Bad value “menubar” for attribute “role” on element “nav”.
Quote “"” in attribute name. Probable cause: Matching quote missing somewhere earlier.
Attribute “twitter"” not allowed on element “a” at this point.
An element with “role=menuitem” must be contained in, or owned by, an element with “role=menubar” or “role=menu”.
The “itemprop” attribute was specified, but the element is not a property of any item.
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