History.gov W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A document must not include both a “meta” element with an “http-equiv” attribute whose value is “content-type”, and a “meta” element with a “charset” attribute.
No space between attributes.
The “align” attribute on the “div” element is obsolete. Use CSS instead.
Attribute “tags-tooltip” not allowed on element “input” at this point.
The “cellpadding” attribute on the “table” element is obsolete. Use CSS instead.
The “cellspacing” attribute on the “table” element is obsolete. Use CSS instead.
The “border” attribute on the “table” element is obsolete. Use CSS instead.
Duplicate ID “fpw-wrapper”.
An element with “role=menuitem” must be contained in, or owned by, an element with “role=menubar” or “role=menu”.
Warnings:
The “type” attribute is unnecessary for JavaScript resources.
The “navigation” role is unnecessary for element “nav”.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
The first occurrence of ID “fpw-wrapper” was here.
The “contentinfo” role is unnecessary for element “footer”.
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