Sll.se W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
A “link” element with a “sizes” attribute must have a “rel” attribute that contains the value “icon” or the value “apple-touch-icon”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “7 december 2017” for attribute “datetime” on element “time”: The literal did not satisfy the time-datetime format.
Bad value “5 december 2017” for attribute “datetime” on element “time”: The literal did not satisfy the time-datetime format.
Element “span” not allowed as child of element “time” in this context. (Suppressing further errors from this subtree.)
The text content of element “time” was not in the required format: The literal did not satisfy the time-datetime format.
Bad value “tel:08-737 25 00” for attribute “href” on element “a”: Illegal character in scheme data: space is not allowed.
Bad value “social” for attribute “rel” on element “a”: The string “social” is not a registered keyword.
Warnings:
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “contentinfo” role is unnecessary for element “footer”.
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