Criticalthinking.org W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “100%” for attribute “width” on element “img”: Expected a digit but saw “%” instead.
Attribute “rel” not allowed on element “span” at this point.
Attribute “rel” not allowed on element “div” at this point.
Attribute “cms” not allowed on element “img” at this point.
The “center” element is obsolete. Use CSS instead.
Attribute “href” not allowed on element “img” at this point.
Bad value “http://www.criticalthinking.org/images/books/Critical-Thinking Reading-WritingTest.jpg” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “http://www.criticalthinking.org/store/cart/add.php?redirect=store/cart/&accessories[666]=1&qty=1&inventories_id=155” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Attribute “rel” not allowed on element “ul” at this point.
Element “br” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Stray end tag “div”.
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