Errors:
Bad value “fr_BE” for attribute “lang” on element “html”: The language subtag “fr_be” is not a valid language subtag.
Element “meta” is missing one or more of the following attributes: “content”, “property”.
Duplicate attribute “name”.
Element “div” not allowed as child of element “hgroup” in this context. (Suppressing further errors from this subtree.)
Element “section” not allowed as child of element “hgroup” in this context. (Suppressing further errors from this subtree.)
Element “hgroup” is missing a required instance of one or more of the following child elements: “h1”, “h2”, “h3”, “h4”, “h5”, “h6”.
Duplicate ID “book-author”.
Bad value “” for attribute “target” on element “a”: Browsing context name must be at least one character long.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value for attribute “onclick” on element “a”: missing } after property list
Element “p” not allowed as child of element “hgroup” in this context. (Suppressing further errors from this subtree.)
Element “a” not allowed as child of element “hgroup” in this context. (Suppressing further errors from this subtree.)
Bad value “” for attribute “src” on element “img”: Must be non-empty.
Element “br” not allowed as child of element “hgroup” in this context. (Suppressing further errors from this subtree.)
End tag “br”.
Duplicate ID “myModalLabel”.
Bad value “navigation” for attribute “role” on element “footer”.
Attribute “alt” not allowed on element “a” at this point.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The first occurrence of ID “book-author” was here.
Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).
The “main” role is unnecessary for element “main”.
Empty heading.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
The first occurrence of ID “myModalLabel” was here.
Belgium BE