Cyber-duck.co.uk W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
Bad value “x-rim-auto-match” for attribute “http-equiv” on element “meta”.
Bad value “text/html; charset=” for attribute “content” on element “meta”: The empty string is not a valid character encoding name.
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.
End tag “svg” did not match the name of the current open element (“use”).
Bad value “255.5” for attribute “width” on element “img”: Expected a digit but saw “.” instead.
Bad value “108.5” for attribute “width” on element “img”: Expected a digit but saw “.” instead.
No “p” element in scope but a “p” end tag seen.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
The “aria-controls” attribute must point to an element in the same document.
Warnings:
The “navigation” role is unnecessary for element “nav”.
The “main” role is unnecessary for element “main”.
The “contentinfo” role is unnecessary for element “footer”.
The “type” attribute is unnecessary for JavaScript resources.
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