Sevenhugs.com W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The first occurrence of ID “hero” was here.
The first occurrence of ID “headerTextImgButton” was here.
The “form” role is unnecessary for element “form”.
Errors:
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Bad value “presentation” for attribute “role” on element “nav”.
Bad value “navigation” for attribute “role” on element “a”.
Duplicate ID “hero”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Duplicate ID “headerTextImgButton”.
Saw “<?”. Probable cause: Attempt to use an XML processing instruction in HTML. (XML processing instructions are not supported in HTML.)
End tag for “body” seen, but there were unclosed elements.
Unclosed element “div”.
Stray end tag “div”.
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