Errors:
Duplicate ID “contact-form-7-css”.
Duplicate ID “cookielawinfo-style-css”.
Duplicate ID “linkssc-style-css”.
Duplicate ID “tablepress-default-css”.
Duplicate ID “avia-merged-styles-css”.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
The “font” element is obsolete. Use CSS instead.
Duplicate ID “welcome”.
The “center” element is obsolete. Use CSS instead.
No “p” element in scope but a “p” end tag seen.
Bad value “name” for attribute “type” on element “input”.
Duplicate ID “s”.
Bad value “CustomFields[111_122]_Zgadzam sie z polityka prywatnosci” for attribute “id” on element “input”: An ID must not contain whitespace.
Bad value “100%” for attribute “width” on element “iframe”: Expected a digit but saw “%” instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Warnings:
The first occurrence of ID “contact-form-7-css” was here.
The first occurrence of ID “cookielawinfo-style-css” was here.
The first occurrence of ID “linkssc-style-css” was here.
The first occurrence of ID “tablepress-default-css” was here.
The first occurrence of ID “avia-merged-styles-css” was here.
The “banner” role is unnecessary for element “header”.
Document uses the Unicode Private Use Area(s), which should not be used in publicly exchanged documents. (Charmod C073)
The “navigation” role is unnecessary for element “nav”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The first occurrence of ID “welcome” was here.
The first occurrence of ID “s” was here.
The “contentinfo” role is unnecessary for element “footer”.
Poland PL