Telecom-paristech.fr W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “45px” for attribute “width” on element “img”: Expected a digit but saw “p” instead.
Bad value “45px” for attribute “height” on element “img”: Expected a digit but saw “p” instead.
Element “form” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
End tag “nav” seen, but there were open elements.
Unclosed element “div”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Duplicate ID “navbar-haut”.
Attribute “width” not allowed on element “a” at this point.
Attribute “height” not allowed on element “a” at this point.
Warnings:
The “navigation” role is unnecessary for element “nav”.
The first occurrence of ID “navbar-haut” was here.
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