Plumelabs.com W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
The “navigation” role is unnecessary for element “nav”.
The first occurrence of ID “a” was here.
The first occurrence of ID “c” was here.
The first occurrence of ID “b” was here.
The first occurrence of ID “d” was here.
The first occurrence of ID “icons” was here.
The first occurrence of ID “Shape” was here.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The first occurrence of ID “group_1” was here.
The first occurrence of ID “group_2” was here.
Errors:
Duplicate ID “a”.
Duplicate ID “c”.
Duplicate ID “b”.
Duplicate ID “d”.
Element “a” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Duplicate ID “icons”.
Duplicate ID “Shape”.
Duplicate ID “group_1”.
Duplicate ID “group_2”.
Element “ul” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
The “itemprop” attribute was specified, but the element is not a property of any item.
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