Maanmittauslaitos.fi W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “//fonts.googleapis.com/css?family=Titillium+Web:300,400,600|Ubuntu:400,400i,500&subset=latin-ext” for attribute “href” on element “link”: Illegal character in query: “|” is not allowed.
Attribute “hreflang” not allowed on element “li” at this point.
Bad value “navigation” for attribute “role” on element “ul”.
Attribute “about” not allowed on element “article” at this point.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
The “aria-labelledby” attribute must point to an element in the same document.
Warnings:
The “banner” role is unnecessary for element “header”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “navigation” role is unnecessary for element “nav”.
The “main” role is unnecessary for element “main”.
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).
The “link” role is unnecessary for element “a”.
The “article” role is unnecessary for element “article”.
The “contentinfo” role is unnecessary for element “footer”.
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