Rockin.co.jp W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
A document must not include more than one “meta” element with a “http-equiv” attribute whose value is “content-type”.
Bad value “Content-Style-Type” for attribute “http-equiv” on element “meta”.
Bad value “Content-Script-Type” for attribute “http-equiv” on element “meta”.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “allowtransparency” attribute on the “iframe” element is obsolete. Use CSS instead.
The “font” element is obsolete. Use CSS instead.
Heading cannot be a child of another heading.
Stray end tag “h3”.
Element “h4” not allowed as child of element “font” in this context. (Suppressing further errors from this subtree.)
Duplicate ID “footer”.
Warnings:
Empty heading.
A table row was 4 columns wide, which is less than the column count established by the first row (12).
The first occurrence of ID “footer” was here.
This document appears to be written in Japanese. Consider adding “lang="ja"” (or variant) to the “html” start tag.
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