Aliancafrancesa.com.br 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.
Duplicate ID “navbar-search”.
The “center” element is obsolete. Use CSS instead.
The element “button” must not appear as a descendant of the “a” element.
Start tag “a” seen but an element of the same type was already open.
Self-closing syntax (“/>”) used on a non-void HTML element. Ignoring the slash and treating as a start tag.
End tag “div” seen, but there were open elements.
Unclosed element “a”.
End tag “footer” seen, but there were open elements.
End tag for “body” seen, but there were unclosed elements.
Warnings:
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
The first occurrence of ID “navbar-search” was here.
The “main” role is unnecessary for element “main”.
The “contentinfo” role is unnecessary for element “footer”.
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