Decn.co.jp W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
The text content of element “script” was not in the required format: Expected space, tab, newline, or slash but found “{” instead.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
End tag “div” seen, but there were open elements.
Unclosed element “h3”.
Element “h3” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Element “div” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
The “width” attribute on the “table” element is obsolete. Use CSS instead.
The “cellspacing” attribute on the “table” element is obsolete. Use CSS instead.
The “border” attribute on the “table” element is obsolete. Use CSS instead.
End tag “h1” seen, but there were open elements.
The “align” attribute on the “img” element is obsolete. Use CSS instead.
Warnings:
This document appears to be written in Japanese. Consider adding “lang="ja"” (or variant) to the “html” start tag.
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