Twinavi.jp W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A document must not include both a “meta” element with an “http-equiv” attribute whose value is “content-type”, and a “meta” element with a “charset” attribute.
Attribute “value” not allowed on element “input” at this point.
Element “input” is missing required attribute “alt”.
Bad character “リ” after “<”. Probable cause: Unescaped “<”. Try escaping it as “<”.
Element “div” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Quote “"” in attribute name. Probable cause: Matching quote missing somewhere earlier.
Attribute “height"185"” not allowed on element “img” at this point.
Attribute “last” not allowed on element “li” at this point.
Duplicate ID “fb-root”.
Warnings:
The “type” attribute is unnecessary for JavaScript resources.
Attribute “height"185"” is not serializable as XML 1.0.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The first occurrence of ID “fb-root” was here.
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