Perspectivia.net W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Attribute “language” not allowed on element “html” at this point.
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
A document must not include both a “meta” element with an “http-equiv” attribute whose value is “content-type”, and a “meta” element with a “charset” attribute.
Bad value “” for attribute “height” on element “img”: The empty string is not a valid non-negative integer.
Bad value “” for attribute “width” on element “img”: The empty string is not a valid non-negative integer.
Duplicate ID “portal-logo”.
Element “div” not allowed as child of element “dl” in this context. (Suppressing further errors from this subtree.)
The element “footer” must not appear as a descendant of the “header” element.
Bad value “” for attribute “id” on element “ul”: An ID must not be the empty string.
Attribute “alt” not allowed on element “a” at this point.
Duplicate ID “”.
Warnings:
The first occurrence of ID “portal-logo” was here.
The first occurrence of ID “” was here.
This document appears to be written in German. Consider adding “lang="de"” (or variant) to the “html” start tag.
Germany DE