Bitflyer.jp W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
Errors:
Element “style” not allowed as child of element “form” in this context. (Suppressing further errors from this subtree.)
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “tooltip” for attribute “role” on element “figcaption”.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Bad value “https://bitflyer.jp/pub/Get Bitcoin_01_jp.pdf” for attribute “href” on element “a”: Illegal character in path segment: space is not allowed.
The “aria-controls” attribute must point to an element in the same document.
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