Rzd-partner.ru W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Stray start tag “html”.
Element “style” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Element “div” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Duplicate ID “slide1”.
Attribute “data” not allowed on element “label” at this point.
End tag “section” seen, but there were open elements.
Unclosed element “div”.
The “aria-labelledby” attribute must point to an element in the same document.
Warnings:
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The first occurrence of ID “slide1” was here.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
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