Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
Attribute “xmlns:og” 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.
Bad start tag in “img” in “head”.
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 “noscript”.
A “link” element must not appear as a descendant of a “body” element unless the “link” element has an “itemprop” attribute or has a “rel” attribute whose value contains “dns-prefetch”, “pingback”, “preconnect”, “prefetch”, “preload”, “prerender”, or “stylesheet”.
Stray end tag “head”.
Start tag “body” seen but an element of the same type was already open.
Bad value “100px” for attribute “width” on element “img”: Expected a digit but saw “p” instead.
Element “div” not allowed as child of element “ol” in this context. (Suppressing further errors from this subtree.)
Element “p” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Bad value “140px” for attribute “width” on element “img”: Expected a digit but saw “p” instead.
Bad value “80px” for attribute “width” on element “img”: Expected a digit but saw “p” instead.
Duplicate ID “s-tab-1”.
Duplicate ID “s-tab-2”.
Duplicate ID “s-tab-3”.
Duplicate ID “s-tab-4”.
Duplicate ID “s-tab-5”.
Duplicate ID “s-tab-6”.
Duplicate ID “s-tab-7”.
Duplicate ID “s-tab-8”.
Duplicate ID “s-tab-9”.
Duplicate ID “s-tab-10”.
Duplicate ID “s-tab-11”.
Self-closing syntax (“/>”) used on a non-void HTML element. Ignoring the slash and treating as a start tag.
The “aria-labelledby” attribute must point to an element in the same document.
The “itemprop” attribute was specified, but the element is not a property of any item.
Warnings:
Attribute with the local name “xmlns:og” is not serializable as XML 1.0.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
The “main” role is unnecessary for element “main”.
The first occurrence of ID “s-tab-1” was here.
The first occurrence of ID “s-tab-2” was here.
The first occurrence of ID “s-tab-3” was here.
The first occurrence of ID “s-tab-4” was here.
The first occurrence of ID “s-tab-5” was here.
The first occurrence of ID “s-tab-6” was here.
The first occurrence of ID “s-tab-7” was here.
The first occurrence of ID “s-tab-8” was here.
The first occurrence of ID “s-tab-9” was here.
The first occurrence of ID “s-tab-10” was here.
The first occurrence of ID “s-tab-11” was here.
This document appears to be written in Polish. Consider adding “lang="pl"” (or variant) to the “html” start tag.
Poland PL