Warnings:
The “banner” role is unnecessary for element “header”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Empty heading.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
The first occurrence of ID “card-showcase-accf7726-8152-11e8-8714-1f5c4bd4c3e7” was here.
The first occurrence of ID “card-showcase-c4f877e0-8061-11e8-bd2b-aba8747f6663” was here.
The first occurrence of ID “card-showcase-1c7d2988-8004-11e8-b74c-03d96cedfc28” was here.
Attribute “"” is not serializable as XML 1.0.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
Errors:
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
End tag “article” seen, but there were open elements.
Unclosed element “div”.
Duplicate ID “card-showcase-accf7726-8152-11e8-8714-1f5c4bd4c3e7”.
Duplicate ID “card-showcase-c4f877e0-8061-11e8-bd2b-aba8747f6663”.
Duplicate ID “card-showcase-1c7d2988-8004-11e8-b74c-03d96cedfc28”.
Bad value “button” for attribute “type” on element “a”: Subtype missing.
No space between attributes.
Saw “"” when expecting an attribute name. Probable cause: “=” missing immediately before.
Attribute “"” not allowed on element “a” at this point.
The “aria-labelledby” attribute must point to an element in the same document.
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