Neweracap.jp W3C HTML Markup Validation
HTML markup errors and warnings
(Rescan now...)
Errors:
Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Self-closing syntax (“/>”) used on a non-void HTML element. Ignoring the slash and treating as a start tag.
Element “input” is missing required attribute “alt”.
Attribute “return” not allowed on element “a” at this point.
Attribute “false;” not allowed on element “a” at this point.
Duplicate ID “s”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
The text content of element “script” was not in the required format: Expected space, tab, newline, or slash but found “{” instead.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Attribute “false;” is not serializable as XML 1.0.
The first occurrence of ID “s” was here.
Japan JP