Portables.org W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Attribute “xmlns:og” not allowed here.
Start tag “a” seen but an element of the same type was already open.
Stray end tag “a”.
Saw “<?”. Probable cause: Attempt to use an XML processing instruction in HTML. (XML processing instructions are not supported in HTML.)
Stray doctype.
Stray start tag “html”.
Stray start tag “head”.
Attribute “http-equiv” not allowed on element “meta” at this point.
Element “meta” is missing one or more of the following attributes: “itemprop”, “property”.
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.
Stray end tag “head”.
Start tag “body” seen but an element of the same type was already open.
A document must not include more than one “meta” element with a “http-equiv” attribute whose value is “content-type”.
Bad value “http://www.portables.org/img/cms/banniere clients.JPG” for attribute “src” on element “img”: Illegal character in path segment: 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:
Attribute with the local name “xmlns:og” is not serializable as XML 1.0.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
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