Errors:
Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.
Bad start tag in “img” in “head”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Stray end tag “noscript”.
Stray end tag “head”.
Start tag “body” seen but an element of the same type was already open.
A slash was not immediately followed by “>”.
Bad value “no-follow” for attribute “rel” on element “a”: The string “no-follow” is not a registered keyword.
Element “span” is missing one or more of the following attributes: “role”.
Element “span” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Duplicate ID “menu”.
Duplicate ID “search-form”.
Attribute “default” not allowed on element “option” at this point.
Element “phone” not allowed as child of element “strong” in this context. (Suppressing further errors from this subtree.)
The “align” attribute on the “h1” element is obsolete. Use CSS instead.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “allowtransparency” attribute on the “iframe” element is obsolete. Use CSS instead.
The “for” attribute of the “label” element must refer to a non-hidden form control.
Warnings:
The “button” role is unnecessary for element “button”.
The “navigation” role is unnecessary for element “nav”.
The first occurrence of ID “menu” was here.
The first occurrence of ID “search-form” was here.
This document appears to be written in Czech. Consider adding “lang="cs"” (or variant) to the “html” start tag.
Czech Republic CZ