Netscape.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Duplicate attribute “id”.
Bad value “” for attribute “id” on element “html”: An ID must not be the empty string.
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
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 “rel” not allowed on element “meta” at this point.
Element “meta” is missing one or more of the following attributes: “http-equiv”, “itemprop”, “name”, “property”.
Bad value “” for attribute “href” on element “link”: Must be non-empty.
Bad value “125px” for attribute “width” on element “img”: Expected a digit but saw “p” instead.
Attribute “autocapitalize” not allowed on element “input” at this point.
Attribute “alt” not allowed on element “a” at this point.
Start tag “a” seen but an element of the same type was already open.
End tag “a” violates nesting rules.
Cannot recover after last error. Any further errors will be ignored.
Warnings:
The “button” role is unnecessary for element “button”.
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