Bitbank.cc W3C HTML Markup Validation
HTML markup errors and warnings
(Rescan now...)
Errors:
A “charset” attribute on a “meta” element found after the first 1024 bytes.
Element “div” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
The element “a” must not appear as a descendant of the “button” element.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “” for attribute “poster” on element “video”: Must be non-empty.
Attribute “alt” not allowed on element “a” at this point.
The “aria-controls” attribute must point to an element in the same document.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Text run is not in Unicode Normalization Form C.
This document appears to be written in Japanese. Consider adding “lang="ja"” (or variant) to the “html” start tag.
Japan JP