Tais.ac.jp W3C HTML Markup Validation
HTML markup errors and warnings
(Rescan now...)
Warnings:
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
The first occurrence of ID “pagetop” was here.
Errors:
End tag “a” violates nesting rules.
Element “dl” is missing a required instance of child element “dd”.
When the “srcset” attribute has any image candidate string with a width descriptor, the “sizes” attribute must also be present.
Attribute “value” not allowed on element “input” at this point.
Element “input” is missing required attribute “alt”.
Duplicate ID “pagetop”.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
The “marginheight” attribute on the “iframe” element is obsolete. Use CSS instead.
The “marginwidth” attribute on the “iframe” element is obsolete. Use CSS instead.
Taiwan TW