Entrenet.jp W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
The character encoding “windows-31j” is not widely supported. Better interoperability may be achieved by using “UTF-8”.
The “type” attribute is unnecessary for JavaScript resources.
The “charset” attribute on the “script” element is obsolete.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
Errors:
Legacy encoding “windows-31j” used. Documents must use UTF-8.
Internal encoding declaration named an unsupported chararacter encoding “charset=windows-31j”.
The only allowed value for the “charset” attribute for the “meta” element is “utf-8”.
Bad value “Pragma” for attribute “http-equiv” on element “meta”.
Bad value “Cache-Control” for attribute “http-equiv” on element “meta”.
Bad value “Expires” for attribute “http-equiv” on element “meta”.
No space between attributes.
Bad value “/CSP/out/keyword.html?keepThis=true&TB_iframe=true&height=950%&width=650” for attribute “href” on element “a”: Percentage ("%") is not followed by two hexadecimal digits.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
The “marginheight” attribute on the “iframe” element is obsolete. Use CSS instead.
The “marginwidth” attribute on the “iframe” element is obsolete. Use CSS instead.
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