Aerofred.com W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
The “navigation” role is unnecessary for element “nav”.
The first occurrence of ID “navbar” was here.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
Errors:
Duplicate ID “navbar”.
Attribute “checked” not allowed on element “input” at this point.
Bad value “260px” for attribute “width” on element “img”: Expected a digit but saw “p” instead.
Attribute “hrole” not allowed on element “a” at this point.
Element “input” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Element “div” not allowed as child of element “h4” in this context. (Suppressing further errors from this subtree.)
The “bgcolor” attribute on the “tr” element is obsolete. Use CSS instead.
The “align” attribute on the “td” element is obsolete. Use CSS instead.
Stray end tag “tr”.
Stray end tag “div”.
Saw “<!--” within a comment. Probable cause: Nested comment (not allowed).
The “aria-controls” attribute must point to an element in the same document.
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