Errors:
Malformed byte sequence: “f3”.
Malformed byte sequence: “b3”.
Malformed byte sequence: “bf”.
Malformed byte sequence: “b1”.
Malformed byte sequence: “b6”.
Malformed byte sequence: “e6”.
Malformed byte sequence: “ea”.
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
Internal encoding declaration “iso-8859-2” disagrees with the actual encoding of the document (“utf-8”).
Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.
The “center” element is obsolete. Use CSS instead.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Malformed byte sequence: “f1”.
Bad value “” for attribute “alt” on element “input”: Must not be empty.
Attribute “value” not allowed on element “input” at this point.
Element “form” not allowed as child of element “h1” in this context. (Suppressing further errors from this subtree.)
Malformed byte sequence: “a6”.
The “cellspacing” attribute on the “table” element is obsolete. Use CSS instead.
The “cellpadding” attribute on the “table” element is obsolete. Use CSS instead.
The “width” attribute on the “td” element is obsolete. Use CSS instead.
The “width” attribute on the “table” element is obsolete. Use CSS instead.
The “border” attribute on the “table” element is obsolete. Use CSS instead.
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The “border” attribute is obsolete.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