300hours.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “cache-control” for attribute “http-equiv” on element “meta”.
Element “script” must not have attribute “charset” unless attribute “src” is also specified.
Bad value “http://#” for attribute “href” on element “a”: Invalid host: empty host.
The “valign” attribute on the “td” element is obsolete. Use CSS instead.
The “align” attribute on the “div” element is obsolete. Use CSS instead.
The “font” element is obsolete. Use CSS instead.
The “width” attribute on the “td” element is obsolete. Use CSS instead.
Element “div” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Stray end tag “hr”.
No space between attributes.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
End tag “div” seen, but there were open elements.
Unclosed element “ul”.
Stray end tag “ul”.
Stray end tag “div”.
Bad value “1” for attribute “async” on element “script”.
Element “script” must not have attribute “async” unless attribute “src” is also specified.
Warnings:
The “language” attribute on the “script” element is obsolete. You can safely omit it.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.
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