Composersforum.org 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.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Duplicate ID “primary-menu”.
Duplicate ID “secondary-menu”.
Warnings:
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
The “main” role is unnecessary for element “main”.
The “contentinfo” role is unnecessary for element “footer”.
The first occurrence of ID “primary-menu” was here.
The first occurrence of ID “secondary-menu” was here.
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