Sitra.fi W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A “charset” attribute on a “meta” element found after the first 1024 bytes.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “h2” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
No space between attributes.
Attribute “;” not allowed on element “div” at this point.
Bad value “https://www.google.com/maps/embed/v1/place?key=AIzaSyCmAtJf9XY2Ds7g-WSDCCTPSb34utZhWY4&q=Itämerenkatu 11-13, 00180 Helsinki, Finland>&zoom=17” for attribute “src” on element “iframe”: Illegal character in query: space is not allowed.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Warnings:
The “banner” role is unnecessary for element “header”.
Attribute “;” is not serializable as XML 1.0.
Empty heading.
The “contentinfo” role is unnecessary for element “footer”.
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