Barcode.graphics 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.
CSS: “color”: Parse Error.
CSS: “font-family”: Parse Error.
Stray end tag “script”.
End tag “div” seen, but there were open elements.
Unclosed element “header”.
Stray end tag “header”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
End tag “a” violates nesting rules.
Cannot recover after last error. Any further errors will be ignored.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “type” attribute is unnecessary for JavaScript resources.
The “type” attribute for the “style” element is not needed and should be omitted.
The “navigation” role is unnecessary for element “nav”.
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