Busyboo.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “https://fonts.googleapis.com/css?family=Source+Sans+Pro:400,600|Roboto:300,400” for attribute “href” on element “link”: Illegal character in query: “|” is not allowed.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
The “center” element is obsolete. Use CSS instead.
Stray end tag “article”.
Element “center” not allowed as child of element “small” in this context. (Suppressing further errors from this subtree.)
Warnings:
The “navigation” role is unnecessary for element “nav”.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
The “contentinfo” role is unnecessary for element “footer”.
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