Asimplepantry.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.
Element “aside” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
The “center” element is obsolete. Use CSS instead.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Duplicate ID “subbox1”.
Duplicate ID “subbox2”.
Duplicate ID “subbox”.
Duplicate ID “subbutton”.
Warnings:
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “complementary” role is unnecessary for element “aside”.
The first occurrence of ID “subbox1” was here.
The first occurrence of ID “subbox2” was here.
The first occurrence of ID “subbox” was here.
The first occurrence of ID “subbutton” was here.
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