Errors:
Legacy doctype. Expected “<!DOCTYPE html>”.
Attribute “xmlns:content” not allowed here.
Attribute “xmlns:dc” not allowed here.
Attribute “xmlns:foaf” not allowed here.
Attribute “xmlns:og” not allowed here.
Attribute “xmlns:rdfs” not allowed here.
Attribute “xmlns:sioc” not allowed here.
Attribute “xmlns:sioct” not allowed here.
Attribute “xmlns:skos” not allowed here.
Attribute “xmlns:xsd” not allowed here.
The “version” attribute on the “html” element is obsolete. You can safely omit it.
The “profile” attribute on the “head” element is obsolete.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 “screen and ” for attribute “media” on element “link”: Media query ended prematurely.
Duplicate ID “logo”.
Duplicate ID “ubm-search-bar-form”.
Duplicate ID “edit-q”.
Duplicate ID “edit-search-block-form-domain-filter”.
Duplicate ID “edit-actions”.
Duplicate ID “edit-submit”.
Duplicate ID “topic-select”.
Attribute “datatype” not allowed on element “a” at this point.
Attribute “rel” not allowed on element “div” at this point.
The “center” element is obsolete. Use CSS instead.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
The “for” attribute of the “label” element must refer to a non-hidden form control.
Warnings:
Attribute with the local name “xmlns:content” is not serializable as XML 1.0.
Attribute with the local name “xmlns:dc” is not serializable as XML 1.0.
Attribute with the local name “xmlns:foaf” is not serializable as XML 1.0.
Attribute with the local name “xmlns:og” is not serializable as XML 1.0.
Attribute with the local name “xmlns:rdfs” is not serializable as XML 1.0.
Attribute with the local name “xmlns:sioc” is not serializable as XML 1.0.
Attribute with the local name “xmlns:sioct” is not serializable as XML 1.0.
Attribute with the local name “xmlns:skos” is not serializable as XML 1.0.
Attribute with the local name “xmlns:xsd” is not serializable as XML 1.0.
Consider avoiding viewport values that prevent users from resizing documents.
The first occurrence of ID “logo” was here.
The first occurrence of ID “ubm-search-bar-form” was here.
The first occurrence of ID “edit-q” was here.
The first occurrence of ID “edit-search-block-form-domain-filter” was here.
The first occurrence of ID “edit-actions” was here.
The first occurrence of ID “edit-submit” was here.
The first occurrence of ID “topic-select” was here.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
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