Xwp.co W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Attribute “amp” not allowed on element “html” at this point.
Attribute “custom-element” not allowed on element “script” at this point.
Attribute “amp-custom” not allowed on element “style” at this point.
CSS: “color”: Parse Error.
CSS: “line-height”: “px” is not a “line-height” value.
Attribute “amp-boilerplate” not allowed on element “style” at this point.
Attribute “placeholder” not allowed on element “span” at this point.
Attribute “[class]” not allowed on element “nav” at this point.
Attribute “on” not allowed on element “button” at this point.
Attribute “[aria-expanded]” not allowed on element “button” at this point.
Element “div” not allowed as child of element “label” in this context. (Suppressing further errors from this subtree.)
Element “li” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Warnings:
The “type” attribute is unnecessary for JavaScript resources.
Attribute “[class]” is not serializable as XML 1.0.
Attribute “[aria-expanded]” is not serializable as XML 1.0.
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).
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
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