Netlearning.co.jp W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
Bad value “100%” for attribute “width” on element “img”: Expected a digit but saw “%” instead.
End tag “header” seen, but there were open elements.
Unclosed element “div”.
Attribute “http-equiv” not allowed on element “meta” at this point.
Element “meta” is missing one or more of the following attributes: “itemprop”, “property”.
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.
Attribute “name” not allowed on element “meta” at this point.
The “align” attribute on the “p” element is obsolete. Use CSS instead.
No “p” element in scope but a “p” end tag seen.
Warnings:
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
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