Errors:
The “profile” attribute on the “head” element is obsolete. To declare which “meta” terms are used in the document, instead register the names as meta extensions. To trigger specific UA behaviors, use a “link” element instead.
Bad value “cleartype” for attribute “http-equiv” on element “meta”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
The “align” attribute on the “img” element is obsolete. Use CSS instead.
Attribute “0” not allowed on element “form” at this point.
End tag “div” seen, but there were open elements.
Unclosed element “nav”.
End tag “header” seen, but there were open elements.
Unclosed element “div”.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “allowtransparency” attribute on the “iframe” element is obsolete. Use CSS instead.
A numeric character reference expanded to carriage return.
Attribute “datatype” not allowed on element “a” at this point.
The “for” attribute of the “label” element must refer to a non-hidden form control.
Warnings:
The “banner” role is unnecessary for element “header”.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
Attribute “0” is not serializable as XML 1.0.
The “navigation” role is unnecessary for element “nav”.
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