Diapasonmag.fr W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
The document is not mappable to XML 1.0 due to a trailing hyphen in a comment.
Errors:
Attribute “itemprop” not allowed on element “meta” at this point.
Bad value “true” for attribute “async” on element “script”.
Bogus comment.
Element “meta” is missing one or more of the following attributes: “itemprop”, “property”.
Duplicate attribute “class”.
Bad value “” for attribute “src” on element “img”: Must be non-empty.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “” for attribute “id” on element “div”: An ID must not be the empty string.
The “itemprop” attribute was specified, but the element is not a property of any item.
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