Hitachikaihin.jp W3C HTML Markup Validation
HTML markup errors and warnings
(Rescan now...)
Errors:
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Bad value “Last-Modified” for attribute “http-equiv” on element “meta”.
Bad value “_new” for attribute “target” on element “a”: Reserved keyword “new” used.
Element “a” is missing one or more of the following attributes: “aria-checked”, “role”.
Bad value “panel5 hide” for attribute “id” on element “div”: An ID must not contain whitespace.
Stray end tag “h4”.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
The element “footer” must not appear as a descendant of the “header” element.
End tag for “body” seen, but there were unclosed elements.
Unclosed element “header”.
Warnings:
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Japan JP