Usedbooksearch.co.uk W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A “charset” attribute on a “meta” element found after the first 1024 bytes.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Duplicate ID “content”.
Bad value “” for attribute “id” on element “ul”: An ID must not be the empty string.
Bad value “https://www.usedbooksearch.co.uk/wp-content/uploads/1364465659_Google +.png” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
The “center” element is obsolete. Use CSS instead.
Start tag “a” seen but an element of the same type was already open.
The “for” attribute of the “label” element must refer to a non-hidden form control.
Warnings:
The first occurrence of ID “content” was here.
Empty heading.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
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