Butlersnow.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
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 “https://theeventscalendar.com/” for attribute “rel” on element “link”: The string “https://theeventscalendar.com/” is not a registered keyword.
Duplicate ID “s”.
Duplicate ID “inlineRadio1”.
Duplicate ID “inlineRadio2”.
Duplicate ID “inlineRadio3”.
The “for” attribute of the “label” element must refer to a non-hidden form control.
Warnings:
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
The first occurrence of ID “s” was here.
The first occurrence of ID “inlineRadio1” was here.
The first occurrence of ID “inlineRadio2” was here.
The first occurrence of ID “inlineRadio3” was here.
Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).
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