Errors:
Bad value “Cache-Control” for attribute “http-equiv” on element “meta”.
The “sizes” attribute may be specified only if the “srcset” attribute is also present.
Attribute “href” not allowed on element “div” at this point.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “content” not allowed on element “span” at this point.
The element “button” must not appear as a descendant of the “a” element.
Element “legend” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Attribute “content” not allowed on element “div” at this point.
Attribute “datetime” not allowed on element “meta” at this point.
Element “div” not allowed as child of element “h1” in this context. (Suppressing further errors from this subtree.)
Attribute “alt” not allowed on element “a” at this point.
Attribute “datetime” not allowed on element “span” at this point.
Element “div” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Element “dl” is missing a required child element.
The “aria-controls” attribute must point to an element in the same document.
The “itemprop” attribute was specified, but the element is not a property of any item.
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