Oxforddnb.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Start tag “head” seen but an element of the same type was already open.
Stray end tag “link”.
Stray end tag “meta”.
No space between attributes.
Element “iterationwrapper” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Stray end tag “input”.
Duplicate attribute “class”.
Bad value “authentication-username” for attribute “autocomplete” on element “input”: The string “authentication-username” is not a valid autofill field name.
Bad value “authentication-password” for attribute “autocomplete” on element “input”: The string “authentication-password” is not a valid autofill field name.
Bad value “feed” for attribute “rel” on element “a”: The string “feed” is not a registered keyword.
Attribute “async” not allowed on element “img” at this point.
The “vspace” attribute on the “img” element is obsolete. Use CSS instead.
The “hspace” attribute on the “img” element is obsolete. Use CSS instead.
Warnings:
The “language” attribute on the “script” element is obsolete. You can safely omit it.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
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