Invisioncommunity.co.uk W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “x-dns-prefetch-control” for attribute “http-equiv” on element “meta”.
Bad value “inline” for attribute “rel” on element “a”: The string “inline” is not a registered keyword.
Stray end tag “span”.
The element “header” must not appear as a descendant of the “header” element.
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”.
Stray end tag “head”.
The “center” element is obsolete. Use CSS instead.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Element “img” is missing required attribute “src”.
Attribute “border” not allowed on element “iframe” at this point.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
The “marginwidth” attribute on the “iframe” element is obsolete. Use CSS instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “itemprop” attribute was specified, but the element is not a property of any item.
Warnings:
The “type” attribute is unnecessary for JavaScript resources.
The “type” attribute for the “style” element is not needed and should be omitted.
The “navigation” role is unnecessary for element “nav”.
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