Adelsvapen.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
The “font” element is obsolete. Use CSS instead.
Warnings:
The “banner” role is unnecessary for element “header”.
The “main” role is unnecessary for element “main”.
The “contentinfo” role is unnecessary for element “footer”.
This document appears to be written in Swedish but the “html” start tag has “lang="en-US"”. Consider using “lang="sv"” (or variant) instead.
Sweden SE