Dtb-online.de W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Saw “<?”. Probable cause: Attempt to use an XML processing instruction in HTML. (XML processing instructions are not supported in HTML.)
Obsolete doctype. Expected “<!DOCTYPE html>”.
Bad value “de_DE” for attribute “lang” on element “html”: The language subtag “de_de” is not a valid language subtag.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “li” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Attribute “alt” not allowed on element “a” at this point.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Element “dl” is missing a required instance of child element “dd”.
Bad value “http://www6.smartadserver.com/call/pubjumpi/55034/411630/22257/S/[timestamp]/?” for attribute “href” on element “a”: Illegal character in path segment: “[” is not allowed.
Bad value “http://www6.smartadserver.com/call/pubi/55034/411630/22257/S/[timestamp]/?” for attribute “src” on element “img”: Illegal character in path segment: “[” is not allowed.
Warnings:
The “language” attribute on the “script” element is obsolete. You can safely omit it.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
The “name” attribute is obsolete. Consider putting an “id” attribute on the nearest container instead.
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