Errors:
Attribute “xmlns:og” not allowed here.
Attribute “xmlns:fb” not allowed here.
Start tag “head” seen but an element of the same type was already open.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” 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.
Attribute “type” not allowed on element “div” at this point.
Duplicate ID “map”.
The “id” attribute on a “map” element must have an the same value as the “name” attribute.
The “align” attribute on the “p” element is obsolete. Use CSS instead.
Duplicate ID “leftnavasd”.
Duplicate ID “leftnav”.
Warnings:
Attribute with the local name “xmlns:og” is not serializable as XML 1.0.
Attribute with the local name “xmlns:fb” is not serializable as XML 1.0.
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
The first occurrence of ID “map” was here.
The first occurrence of ID “leftnavasd” was here.
The first occurrence of ID “leftnav” was here.
The “contentinfo” role is unnecessary for element “footer”.
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