Meurthe-et-moselle.fr W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Element “none” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
End tag “span” seen, but there were open elements.
Unclosed element “none”.
Element “div” not allowed as child of element “h1” in this context. (Suppressing further errors from this subtree.)
Stray end tag “nav”.
End tag “header” seen, but there were open elements.
Unclosed element “div”.
Element “div” not allowed as child of element “a” in this context. (Suppressing further errors from this subtree.)
Attribute “allow” not allowed on element “iframe” at this point.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “datatype” not allowed on element “span” at this point.
Attribute “content” not allowed on element “span” at this point.
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).
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