Warnings:
The “banner” role is unnecessary for element “header”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “form” role is unnecessary for element “form”.
The first occurrence of ID “card-showcase-d5883660-92d4-5e98-9159-3df3f68cd684” was here.
The first occurrence of ID “card-showcase-6f4776b0-795f-11e8-82ff-af89a73fd627” was here.
The first occurrence of ID “card-showcase-bb9047b6-78bc-11e8-9115-ef702a83291e” was here.
Attribute “"” is not serializable as XML 1.0.
The first occurrence of ID “button_btf1” was here.
The first occurrence of ID “button_btf2” was here.
The “border” attribute is obsolete.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.)
Duplicate ID “card-showcase-d5883660-92d4-5e98-9159-3df3f68cd684”.
Duplicate ID “card-showcase-6f4776b0-795f-11e8-82ff-af89a73fd627”.
Duplicate ID “card-showcase-bb9047b6-78bc-11e8-9115-ef702a83291e”.
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.
Duplicate ID “button_btf1”.
Duplicate ID “button_btf2”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
The “aria-labelledby” attribute must point to an element in the same document.
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