Alphapolis.co.jp W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Element “style” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Element “div” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Attribute “type” not allowed on element “iframe” at this point.
Attribute “border” not allowed on element “iframe” at this point.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Warnings:
The “language” attribute on the “script” element is obsolete. You can safely omit it.
This document appears to be written in Japanese. Consider adding “lang="ja"” (or variant) to the “html” start tag.
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