Bombfell.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Saw “<?”. Probable cause: Attempt to use an XML processing instruction in HTML. (XML processing instructions are not supported in HTML.)
Obsolete doctype. Expected “<!DOCTYPE html>”.
When the attribute “xml:lang” in no namespace is specified, the element must also have the attribute “lang” present with the same value.
Bad value “https://fonts.googleapis.com/css?family=Lato:100,300,400,400i,700,700i|OpenSans:400” for attribute “href” on element “link”: Illegal character in query: “|” is not allowed.
The element “button” must not appear as a descendant of the “a” element.
Element “div” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Element “center” not allowed as child of element “h3” in this context. (Suppressing further errors from this subtree.)
The “center” element is obsolete. Use CSS instead.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Warnings:
The “type” attribute is unnecessary for JavaScript resources.
The “navigation” role is unnecessary for element “nav”.
Empty heading.
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.
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