Trelleborg.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
A “link” element with a “sizes” attribute must have a “rel” attribute that contains the value “icon” or the value “apple-touch-icon”.
Element “div” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Duplicate attribute “class”.
Attribute “button” not allowed on element “a” at this point.
Bad value “” for attribute “id” on element “a”: An ID must not be the empty string.
Element “a” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Element “img” is missing required attribute “src”.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Attribute “page” not allowed on element “li” at this point.
Attribute “this” not allowed on element “li” at this point.
Attribute “to” not allowed on element “li” at this point.
Attribute “top” not allowed on element “li” at this point.
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