Thektog.org W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Attribute “xmlns:fb” not allowed here.
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 “Menu” for attribute “rel” on element “a”: The string “Menu” is not a registered keyword.
Element “ul” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Bad value “up” for attribute “rel” on element “a”: The string “up” is not a registered keyword.
Duplicate ID “PreviewTooltip”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
End tag “aside” seen, but there were open elements.
Unclosed element “div”.
The “align” attribute on the “div” element is obsolete. Use CSS instead.
Attribute “sl-processed” not allowed on element “a” at this point.
Warnings:
Attribute with the local name “xmlns:fb” is not serializable as XML 1.0.
The “date” input type is not supported in all browsers. Please be sure to test, and consider using a polyfill.
The first occurrence of ID “PreviewTooltip” was here.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
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