Errors:
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.
The element “button” must not appear as a descendant of the “a” element.
No space between attributes.
Element “p” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Duplicate ID “ajaxArchiveListView”.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Duplicate ID “d-kursy-head-pk”.
Element “div” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Duplicate ID “d-kursy-head-pp”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Stray start tag “script”.
Cannot recover after last error. Any further errors will be ignored.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “type” attribute is unnecessary for JavaScript resources.
The “charset” attribute on the “script” element is obsolete.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
The first occurrence of ID “ajaxArchiveListView” was here.
The first occurrence of ID “d-kursy-head-pk” was here.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The first occurrence of ID “d-kursy-head-pp” was here.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
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