Savorysimple.net 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.
Bad value “true” for attribute “async” on element “script”.
Duplicate attribute “class”.
End tag “div” seen, but there were open elements.
Unclosed element “span”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “” for attribute “name” on element “input”: Must not be empty.
Duplicate ID “subbox”.
Duplicate ID “subbutton”.
Bad value “” for attribute “action” on element “form”: Must be non-empty.
Warnings:
The “navigation” role is unnecessary for element “nav”.
The “banner” role is unnecessary for element “header”.
The “main” role is unnecessary for element “main”.
The “contentinfo” role is unnecessary for element “footer”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The first occurrence of ID “subbox” was here.
The first occurrence of ID “subbutton” was here.
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