Aeroportsdeparis.fr W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
Bad value “cleartype” for attribute “http-equiv” on element “meta”.
Element “meta” is missing required attribute “content”.
Element “meta” is missing one or more of the following attributes: “content”, “property”.
Bad value “zh-CHS” for attribute “hreflang” on element “link”: Bad extlang subtag “chs”.
Bad value “zh-CHT” for attribute “hreflang” on element “link”: Bad extlang subtag “cht”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Saw “<>”. Probable causes: Unescaped “<” (escape as “<”) or mistyped start tag.
Element “div” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Warnings:
The “document” role is unnecessary for element “body”.
The “banner” role is unnecessary for element “header”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
Empty heading.
The “contentinfo” role is unnecessary for element “footer”.
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