Errors:
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Attribute “for” not allowed on element “span” at this point.
Duplicate attribute “http:”.
Duplicate attribute “imt-lille-douai.fr”.
Duplicate attribute “content”.
Duplicate attribute “uploads”.
Duplicate attribute “2017”.
Duplicate attribute “02”.
Attribute “719w,” not allowed on element “img” at this point.
Attribute “http:” not allowed on element “img” at this point.
Attribute “imt-lille-douai.fr” not allowed on element “img” at this point.
Attribute “content” not allowed on element “img” at this point.
Attribute “uploads” not allowed on element “img” at this point.
Attribute “2017” not allowed on element “img” at this point.
Attribute “02” not allowed on element “img” at this point.
Attribute “ecole-ingenieur-imtlilledouai-300x200.jpg” not allowed on element “img” at this point.
Attribute “300w,” not allowed on element “img” at this point.
Attribute “ecole-ingenieur-imtlilledouai-412x275.jpg” not allowed on element “img” at this point.
Attribute “412w,” not allowed on element “img” at this point.
Attribute “ecole-ingenieur-imtlilledouai-338x225.jpg” not allowed on element “img” at this point.
Attribute “338w,” not allowed on element “img” at this point.
Attribute “ecole-ingenieur-imtlilledouai-114x76.jpg” not allowed on element “img” at this point.
Attribute “114w” not allowed on element “img” at this point.
The element “header” must not appear as a descendant of the “header” element.
Attribute “pubdate” not allowed on element “time” at this point.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Attribute “allow” not allowed on element “iframe” at this point.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
The “itemprop” attribute was specified, but the element is not a property of any item.
Warnings:
Attribute “719w,” is not serializable as XML 1.0.
Attribute “http:” is not serializable as XML 1.0.
Attribute “2017” is not serializable as XML 1.0.
Attribute “02” is not serializable as XML 1.0.
Attribute “300w,” is not serializable as XML 1.0.
Attribute “412w,” is not serializable as XML 1.0.
Attribute “338w,” is not serializable as XML 1.0.
Attribute “114w” is not serializable as XML 1.0.
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).
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Algeria DZ