Techlib.cz W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A document must not include both a “meta” element with an “http-equiv” attribute whose value is “content-type”, and a “meta” element with a “charset” attribute.
A document must not include more than one “meta” element with its “name” attribute set to the value “description”.
Stray end tag “a”.
Bad value “navigation” for attribute “role” on element “ul”.
Bad value “https://www.techlib.cz/en/2749-about-ntk#tab_history^M” for attribute “href” on element “a”: Illegal character in fragment: “^” is not allowed.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “name” not allowed on element “div” at this point.
Text not allowed in element “ul” in this context.
Attribute “href” not allowed on element “h3” at this point.
Warnings:
Document uses the Unicode Private Use Area(s), which should not be used in publicly exchanged documents. (Charmod C073)
Empty heading.
Czech Republic CZ
