Io3000.com W3C HTML Markup Validation
HTML markup errors and warnings
(Rescan now...)
Errors:
A “link” element with a “sizes” attribute must have a “rel” attribute that contains the value “icon” or the value “apple-touch-icon”.
Bad value “//fonts.googleapis.com/css?family=Noto+Sans|Share+Tech+Mono” for attribute “href” on element “link”: Illegal character in query: “|” is not allowed.
Attribute “xmlns:v” not allowed here.
Bad value “v:url” for attribute “rel” on element “a”: The string “v:url” is not a registered keyword.
Warnings:
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
The “main” role is unnecessary for element “main”.
Attribute with the local name “xmlns:v” is not serializable as XML 1.0.
The “contentinfo” role is unnecessary for element “footer”.
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