Errors:
Bad value “cs_CZ” for attribute “lang” on element “html”: The language subtag “cs_cz” is not a valid language subtag.
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
A document must not include both a “meta” element with an “http-equiv” attribute whose value is “content-type”, and a “meta” element with a “charset” attribute.
Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.
Bad value “Cache-Control” for attribute “http-equiv” on element “meta”.
The “noshade” attribute on the “hr” element is obsolete. Use CSS instead.
The “size” attribute on the “hr” element is obsolete. Use CSS instead.
The “cellspacing” attribute on the “table” element is obsolete.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The “cellpadding” attribute on the “table” element is obsolete.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 element “h4” must not appear as a descendant of the “th” element.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Named character reference was not terminated by a semicolon. (Or “&” should have been escaped as “&”.)
Stray end tag “a”.
The “width” attribute on the “td” element is obsolete. Use CSS instead.
A slash was not immediately followed by “>”.
Element “img<” not allowed as child of element “td” in this context. (Suppressing further errors from this subtree.)
A table cell was implicitly closed, but there were open elements.
Unclosed element “img<”.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
Element name “img<” cannot be represented as XML 1.0.
The “language” attribute on the “script” element is obsolete.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The “border” attribute is obsolete.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.
Czech Republic CZ