Nishiri.co.jp W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “og:http://ogp.me/ns# fb:http://ogp.me/ns/fb#” for attribute “prefix” on element “head”.
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”.
Stray end tag “a”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
No “p” element in scope but a “p” end tag seen.
End tag “section” seen, but there were open elements.
Unclosed element “div”.
The text content of element “time” was not in the required format: The literal did not satisfy the time-datetime format.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “type” attribute is unnecessary for JavaScript resources.
The “type” attribute for the “style” element is not needed and should be omitted.
The “charset” attribute on the “script” element is obsolete.
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