Errors:
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Bad value “https://fonts.googleapis.com/css?family=Arbutus+Slab|Roboto:400,700” for attribute “href” on element “link”: Illegal character in query: “|” is not allowed.
Attribute “maxlength” not allowed on element “input” at this point.
Attribute “size” not allowed on element “input” at this point.
Attribute “maxlength” is only allowed when the input type is “email”, “password”, “search”, “tel”, “text”, or “url”.
Bad value “https://www.w3.org/1999/xlink” for the attribute “xmlns:link” (only “http://www.w3.org/1999/xlink” permitted here).
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
The “align” attribute on the “div” element is obsolete. Use CSS instead.
Duplicate ID “title”.
Duplicate ID “productTitle”.
Duplicate ID “ebooksProductTitle”.
Duplicate ID “subbox”.
Duplicate ID “subbutton”.
Duplicate ID “disclosure”.
Duplicate ID “subscribeenews-ext-2”.
Bad value “” for attribute “target” on element “a”: Browsing context name must be at least one character long.
Attribute “name” not allowed on element “meta” at this point.
Element “meta” is missing one or more of the following attributes: “itemprop”, “property”.
Warnings:
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Attribute “xmlns:xlink” with a value other than “http://www.w3.org/1999/xlink” is not serializable as XML 1.0 without changing document semantics.
The first occurrence of ID “title” was here.
The first occurrence of ID “productTitle” was here.
The first occurrence of ID “ebooksProductTitle” was here.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
The first occurrence of ID “subbox” was here.
The first occurrence of ID “subbutton” was here.
The first occurrence of ID “disclosure” was here.
The first occurrence of ID “subscribeenews-ext-2” was here.
The “complementary” role is unnecessary for element “aside”.
United States US