Errors:
Obsolete doctype. Expected “<!DOCTYPE html>”.
Bad value “button btn-default” for attribute “type” on element “button”.
Bad value “1280:2075” for attribute “rel” on element “a”: The string “1280:2075” is not a registered keyword.
Bad value “true” for attribute “readonly” on element “input”.
Duplicate ID “category_id”.
Duplicate ID “filter_city”.
Duplicate ID “filter_region”.
A numeric character reference expanded to carriage return.
Bad value “http://www.kamdomesta.sk/images/?type=eventbig&src=events/2017/12/admid0000/images/MFFK Febiofest_2018.png” for attribute “src” on element “img”: Illegal character in query: space is not allowed.
Bad value “1282:2080” for attribute “rel” on element “a”: The string “1282:2080” is not a registered keyword.
The element “button” must not appear as a descendant of the “a” element.
Bad value “1050:1745” for attribute “rel” on element “a”: The string “1050:1745” is not a registered keyword.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “/tools/banner-stats/?city=&banner[1280]=2075&banner[1282]=2080&banner[154]=1089&banner[1165]=1885&banner[1284]=2086&banner[1283]=2085” for attribute “src” on element “img”: Illegal character in query: “[” is not allowed.
Warnings:
Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).
The first occurrence of ID “category_id” was here.
The first occurrence of ID “filter_city” was here.
The first occurrence of ID “filter_region” was here.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
This document appears to be written in Slovak. Consider adding “lang="sk"” (or variant) to the “html” start tag.
Slovakia SK