Openhand.org W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Attribute “about” not allowed on element “div” at this point.
When the “srcset” attribute has any image candidate string with a width descriptor, the “sizes” attribute must also be present.
The “sizes” attribute may be specified only if the “srcset” attribute is also present.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “about” not allowed on element “article” at this point.
Attribute “content” not allowed on element “span” at this point.
The “itemprop” attribute was specified, but the element is not a property of any item.
Warnings:
The “banner” role is unnecessary for element “header”.
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