Theresourcefulmama.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.
“"” in an unquoted attribute value. Probable causes: Attributes running together or a URL query string in an unquoted attribute value.
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”.
Element “div” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
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.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
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