Importgenius.com W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
Content-Security-Policy HTTP header: Bad content security policy: Source list contains duplicate source expression "*.google.com". All but the first instance will be ignored. Source list contains duplicate source expression "swaychat.firebaseio.com". All but the first instance will be ignored. Source list contains duplicate source expression "swaychat.firebaseio.com". All but the first instance will be ignored.
The “type” attribute is unnecessary for JavaScript resources.
Empty heading.
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.
Errors:
Bad character “ ” after “<”. Probable cause: Unescaped “<”. Try escaping it as “<”.
Forbidden code point U+0092.
Element “option” without attribute “label” must not be empty.
“"” in an unquoted attribute value. Probable causes: Attributes running together or a URL query string in an unquoted attribute value.
Bad value “/"Selected/"” for attribute “selected” on element “option”.
No “p” element in scope but a “p” end tag seen.
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