Nantes.fr W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A document must not include both a “meta” element with an “http-equiv” attribute whose value is “content-type”, and a “meta” element with a “charset” attribute.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Bad value “” for attribute “target” on element “a”: Browsing context name must be at least one character long.
Element “c:if” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Attribute “addthis:userid” not allowed on element “a” at this point.
Bad value “https://prof.estat.com/m/web/223023141897?c=Ville de Nantes : Accueil&p=Ville de Nantes : Accueil&l3=Ville de Nantes : Accueil&l4=Ville de Nantes : Accueil&st=0&sjs=0” for attribute “src” on element “img”: Illegal character in query: space is not allowed.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Warnings:
Element name “c:if” cannot be represented as XML 1.0.
Attribute “addthis:userid” is not serializable as XML 1.0.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
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