Errors:
Legacy encoding “shift_jis” used. Documents must use UTF-8.
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
The only allowed value for the “charset” attribute for the “meta” element is “utf-8”.
Stray end tag “a”.
Text not allowed in element “ul” in this context.
No “li” element in scope but a “li” end tag seen.
No space between attributes.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
The “marginheight” attribute on the “iframe” element is obsolete. Use CSS instead.
The “marginwidth” attribute on the “iframe” element is obsolete. Use CSS instead.
The only allowed value for the “charset” attribute for the “script” element is “utf-8”. (But the attribute is not needed and should be omitted altogether.)
Stray end tag “div”.
Warnings:
The “type” attribute is unnecessary for JavaScript resources.
The “banner” role is unnecessary for element “header”.
The “main” role is unnecessary for element “main”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “contentinfo” role is unnecessary for element “footer”.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
The “charset” attribute on the “script” element is obsolete.
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