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 “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
Bad value “https://www4.smartadserver.com/call/pubjumpi/61741/481969/29450/S/[timestamp]/?” for attribute “href” on element “a”: Illegal character in path segment: “[” is not allowed.
Bad value “https://www4.smartadserver.com/call/pubi/61741/481969/29450/S/[timestamp]/?” for attribute “src” on element “img”: Illegal character in path segment: “[” is not allowed.
Bad value “https://www4.smartadserver.com/call/pubjumpi/61741/481969/26988/M/[timestamp]/?” for attribute “href” on element “a”: Illegal character in path segment: “[” is not allowed.
Bad value “https://www4.smartadserver.com/call/pubi/61741/481969/26988/M/[timestamp]/?” for attribute “src” on element “img”: Illegal character in path segment: “[” is not allowed.
Element “h1” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Element “a” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Element “div” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Stray end tag “div”.
No “p” element in scope but a “p” end tag seen.
Bad value “https://www4.smartadserver.com/call/pubjumpi/61741/481968/26982/S/[timestamp]/?” for attribute “href” on element “a”: Illegal character in path segment: “[” is not allowed.
Bad value “https://www4.smartadserver.com/call/pubi/61741/481968/26982/S/[timestamp]/?” for attribute “src” on element “img”: Illegal character in path segment: “[” is not allowed.
Bad value “https://www4.smartadserver.com/call/pubjumpi/61741/481969/26983/S/[timestamp]/?” for attribute “href” on element “a”: Illegal character in path segment: “[” is not allowed.
Bad value “https://www4.smartadserver.com/call/pubi/61741/481969/26983/S/[timestamp]/?” for attribute “src” on element “img”: Illegal character in path segment: “[” is not allowed.
The “itemprop” attribute was specified, but the element is not a property of any item.
Warnings:
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
This document appears to be written in Polish. Consider adding “lang="pl"” (or variant) to the “html” start tag.
Poland PL