Errors:
Bad value “//fonts.googleapis.com/css?family=Roboto:400,100,300,500,700,900|Open+Sans&subset=latin,latin-ext” for attribute “href” on element “link”: Illegal character in query: “|” is not allowed.
Duplicate attribute “media”.
Duplicate attribute “name”.
The element “label” must not appear as a descendant of the “label” element.
Bad value “” for attribute “action” on element “form”: Must be non-empty.
Forbidden code point U+0080.
Forbidden code point U+0093.
No space between attributes.
Attribute “;” not allowed on element “iframe” at this point.
The text content of element “script” was not in the required format: Expected space, tab, newline, or slash but found “{” instead.
The “for” attribute of the “label” element must refer to a non-hidden form control.
The “aria-labelledby” attribute must point to an element in the same document.
Warnings:
The “form” role is unnecessary for element “form”.
The “navigation” role is unnecessary for element “nav”.
Empty heading.
Attribute “;” is not serializable as XML 1.0.
This document appears to be written in Polish. Consider adding “lang="pl"” (or variant) to the “html” start tag.
Poland PL