Komandor.pl 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”.
Bad value “tel:605 300 400” for attribute “href” on element “a”: Illegal character in scheme data: space is not allowed.
Bad value “100%” for attribute “width” on element “video”: Expected a digit but saw “%” instead.
Bad value “100%” for attribute “height” on element “video”: Expected a digit but saw “%” instead.
Bad value “undefined” for attribute “lang” on element “img”: Subtags must not exceed 8 characters in length.
Bad value “14272” for attribute “rel” on element “a”: The string “14272” is not a registered keyword.
Bad value “” for attribute “name” on element “button”: Must not be empty.
Warnings:
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
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