Errors:
Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Stray end tag “head”.
Start tag “body” seen but an element of the same type was already open.
Element “img” is missing required attribute “src”.
End tag “header” seen, but there were open elements.
Unclosed element “div”.
Duplicate ID “query_querystring”.
Start tag “a” seen but an element of the same type was already open.
Stray end tag “a”.
No space between attributes.
Quote “"” in attribute name. Probable cause: Matching quote missing somewhere earlier.
Attribute “mattled” not allowed on element “a” at this point.
Attribute “4gb” not allowed on element “a” at this point.
Attribute “500” not allowed on element “a” at this point.
Attribute “hd500” not allowed on element “a” at this point.
Attribute “dvd” not allowed on element “a” at this point.
Attribute “hdmi” not allowed on element “a” at this point.
Attribute “usb-c” not allowed on element “a” at this point.
Attribute “bt” not allowed on element “a” at this point.
Attribute “win10” not allowed on element “a” at this point.
Attribute “2y” not allowed on element “a” at this point.
Attribute “srebrny"” not allowed on element “a” at this point.
Attribute “mattled” not allowed on element “img” at this point.
Attribute “4gb” not allowed on element “img” at this point.
Attribute “500” not allowed on element “img” at this point.
Attribute “hd500” not allowed on element “img” at this point.
Attribute “dvd” not allowed on element “img” at this point.
Attribute “hdmi” not allowed on element “img” at this point.
Attribute “usb-c” not allowed on element “img” at this point.
Attribute “bt” not allowed on element “img” at this point.
Attribute “win10” not allowed on element “img” at this point.
Attribute “2y” not allowed on element “img” at this point.
Attribute “srebrny"” not allowed on element “img” at this point.
The element “label” must not appear as a descendant of the “label” element.
Element “p” not allowed as child of element “label” in this context. (Suppressing further errors from this subtree.)
Bad value “true” for attribute “async” on element “script”.
Warnings:
Empty heading.
The first occurrence of ID “query_querystring” was here.
Attribute “4gb” is not serializable as XML 1.0.
Attribute “500” is not serializable as XML 1.0.
Attribute “2y” is not serializable as XML 1.0.
Attribute “srebrny"” is not serializable as XML 1.0.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
This document appears to be written in Polish. Consider adding “lang="pl"” (or variant) to the “html” start tag.
Poland PL