Errors:
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
End tag “strong” violates nesting rules.
Stray end tag “span”.
The “center” element is obsolete. Use CSS instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
Element “style” not allowed as child of element “p” in this context. (Suppressing further errors from this subtree.)
The “valign” attribute on the “td” element is obsolete. Use CSS instead.
No “p” element in scope but a “p” end tag seen.
Element “gcse:search” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
No space between attributes.
Quote “"” in attribute name. Probable cause: Matching quote missing somewhere earlier.
Bad value “https://lightning.nagoya/ja/“ target=” for attribute “href” on element “a”: Illegal character in path segment: space is not allowed.
Attribute “_blank"” not allowed on element “a” at this point.
Bad value “https://ex-unit.nagoya/ja/“ target=” for attribute “href” on element “a”: Illegal character in path segment: space is not allowed.
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
Warnings:
The “language” attribute on the “script” element is obsolete. You can safely omit it.
The “name” attribute is obsolete. Consider putting an “id” attribute on the nearest container instead.
Empty heading.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Element name “gcse:search” cannot be represented as XML 1.0.
Attribute “_blank"” is not serializable as XML 1.0.
Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).
Japan JP