Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
The first occurrence of ID “calculator” was here.
The “form” role is unnecessary for element “form”.
The “main” role is unnecessary for element “main”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “contentinfo” role is unnecessary for element “footer”.
Errors:
Element “div” is missing one or more of the following attributes: “role”.
Duplicate ID “calculator”.
“th” start tag in table body.
The “align” attribute on the “th” element is obsolete. Use CSS instead.
The “align” attribute on the “td” element is obsolete. Use CSS instead.
Attribute “datetime” not allowed on element “span” at this point.
End tag had attributes.
Bad value “Lupus says:” for attribute “cite” on element “blockquote”: Illegal character in path segment: space is not allowed.
Bad value “Ania says:” for attribute “cite” on element “blockquote”: Illegal character in path segment: space is not allowed.
Bad value “Michal says:” for attribute “cite” on element “blockquote”: Illegal character in path segment: space is not allowed.
Bad value “Ted says:” for attribute “cite” on element “blockquote”: Illegal character in path segment: space is not allowed.
Attribute “rel” not allowed on element “span” at this point.
Stray end tag “div”.
The “aria-controls” attribute must point to an element in the same document.
Poland PL