Bitdegree.org W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
Bad value “https://fonts.googleapis.com/css?family=Source+Code+Pro:100,200,300,400,500,600,700,900|Work+Sans:100,200,300,400,500,600,700,800,900&subset=latin-ext” for attribute “href” on element “link”: Illegal character in query: “|” is not allowed.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Named character reference was not terminated by a semicolon. (Or “&” should have been escaped as “&”.)
The “aria-labelledby” attribute must point to an element in the same document.
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