Errors:
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.
When the attribute “xml:lang” in no namespace is specified, the element must also have the attribute “lang” present with the same value.
The “version” attribute on the “html” element is obsolete.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The “profile” attribute on the “head” element is obsolete.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 “https://fonts.googleapis.com/css?family=Rubik:300,300i,400,400i,500,500i,700,700i|Source+Serif+Pro:600,700” for attribute “href” on element “link”: Illegal character in query: “|” is not allowed.
Duplicate ID “icon-x”.
Duplicate ID “linkedin”.
Bad value “--navigation-(archive)” for attribute “id” on element “g”: Not a valid XML 1.0 name.
Duplicate ID “--navigation-(archive)”.
Bad value “v.20.0-header_large-(on-scroll)” for attribute “id” on element “g”: Not a valid XML 1.0 name.
Bad value “” for attribute “id” on element “ul”: An ID must not be the empty string.
Duplicate ID “”.
Duplicate attribute “href”.
Bad value “” for attribute “src” on element “img”: Must be non-empty.
Attribute “about” not allowed on element “article” at this point.
Attribute “content” not allowed on element “span” at this point.
Attribute “datatype” not allowed on element “span” at this point.
Attribute “name” not allowed on element “div” at this point.
The element “input” must not appear as a descendant of the “button” element.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Duplicate ID “search”.
Attribute “step” not allowed on element “input” at this point.
No “p” element in scope but a “p” end tag seen.
Bad value “” for attribute “action” on element “form”: Must be non-empty.
Element “option” without attribute “label” must not be empty.
The “aria-labelledby” attribute must point to an element in the same document.
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 “icon-x” was here.
The first occurrence of ID “linkedin” was here.
The first occurrence of ID “--navigation-(archive)” was here.
The first occurrence of ID “” was here.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “form” role is unnecessary for element “form”.
The first occurrence of ID “search” was here.
Empty heading.
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.
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