7gogo.jp W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A “charset” attribute on a “meta” element found after the first 1024 bytes.
Bad value “utf8” for attribute “charset” on element “meta”: “utf8” is not a preferred encoding name. The preferred label for this encoding is “utf-8”.
Bad value “Pragma” for attribute “http-equiv” on element “meta”.
Bad value “Cache-Control” for attribute “http-equiv” on element “meta”.
No space between attributes.
Element “img” is missing required attribute “src”.
Element “div” not allowed as child of element “button” in this context. (Suppressing further errors from this subtree.)
Warnings:
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.
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