Warnings:
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
The “main” role is unnecessary for element “main”.
The “article” role is unnecessary for element “article”.
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.
Errors:
Bad value “” for attribute “target” on element “a”: Browsing context name must be at least one character long.
Attribute “placeholder” is only allowed when the input type is “email”, “number”, “password”, “search”, “tel”, “text”, or “url”.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
The element “button” must not appear as a descendant of the “a” element.
The first child “option” element of a “select” element with a “required” attribute, and without a “multiple” attribute, and without a “size” attribute whose value is greater than “1”, must have either an empty “value” attribute, or must have no text content. Consider either adding a placeholder option label, or adding a “size” attribute with a value equal to the number of “option” elements.
Attribute “nameat” not allowed on element “a” at this point.
Bad value “” for attribute “src” on element “script”: Must be non-empty.
The text content of element “script” was not in the required format: Expected space, tab, newline, or slash but found “{” instead.
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