Reporterre.net W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
Element “style” not allowed as child of element “header” 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.
Element “li” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Stray start tag “span”.
Stray end tag “span”.
“=” in an unquoted attribute value. Probable causes: Attributes running together or a URL query string in an unquoted attribute value.
The “align” attribute on the “img” element is obsolete. Use CSS instead.
The “center” element is obsolete. Use CSS instead.
Element “dl” is missing a required instance of child element “dd”.
Element “div” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Duplicate ID “libnewsletter”.
Duplicate ID “session_email”.
End tag “div” seen, but there were open elements.
Unclosed element “span”.
Warnings:
The first occurrence of ID “libnewsletter” was here.
The first occurrence of ID “session_email” was here.
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