Fabbit.co.jp W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A document must not include more than one “meta” element with its “name” attribute set to the value “description”.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Duplicate ID “レイヤー_1”.
Element “p” not allowed as child of element “small” in this context. (Suppressing further errors from this subtree.)
The “align” attribute on the “p” element is obsolete. Use CSS instead.
Element “div” not allowed as child of element “button” in this context. (Suppressing further errors from this subtree.)
Bad value “link” for attribute “usemap” on element “img”: A hash-name reference must start with “#”.
No space between attributes.
Start tag “a” seen but an element of the same type was already open.
End tag “a” violates nesting rules.
Cannot recover after last error. Any further errors will be ignored.
Warnings:
The first occurrence of ID “レイヤー_1” was here.
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