Pkw.de W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
Bad value “imagetoolbar” for attribute “http-equiv” on element “meta”.
Bad value “msthemecompatible” for attribute “http-equiv” on element “meta”.
The element “button” must not appear as a descendant of the “a” element.
Element “h4” not allowed as child of element “label” in this context. (Suppressing further errors from this subtree.)
Text not allowed in element “select” in this context.
Bad value “true” for attribute “disabled” on element “select”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Stray end tag “div”.
Warnings:
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “type” attribute is unnecessary for JavaScript resources.
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