Errors:
Saw “<?”. Probable cause: Attempt to use an XML processing instruction in HTML. (XML processing instructions are not supported in HTML.)
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
“=” in an unquoted attribute value. Probable causes: Attributes running together or a URL query string in an unquoted attribute value.
Attribute “initial-scale” not allowed on element “meta” at this point.
Attribute “minimum-scale” not allowed on element “meta” at this point.
Attribute “maximum-scale” not allowed on element “meta” at this point.
Attribute “user-scalable” not allowed on element “meta” 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The “scrolling” attribute on the “iframe” element is obsolete.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The “frameborder” attribute on the “iframe” element is obsolete.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.
The “allowtransparency” attribute on the “iframe” element is obsolete. Use CSS instead.
Bad value “page-a1” for attribute “rel” on element “a”: The string “page-a1” is not a registered keyword.
Bad value “page-a2” for attribute “rel” on element “a”: The string “page-a2” is not a registered keyword.
Bad value “page-labo” for attribute “rel” on element “a”: The string “page-labo” is not a registered keyword.
Bad value “page-word” for attribute “rel” on element “a”: The string “page-word” is not a registered keyword.
Element “br” not allowed as child of element “ol” 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 “whats_marugoto” for attribute “rel” on element “a”: The string “whats_marugoto” is not a registered keyword.
Bad value “level_description” for attribute “rel” on element “a”: The string “level_description” is not a registered keyword.
Forbidden code point U+000b.
Warnings:
This document appears to be written in English but the “html” start tag has “lang="ja"”. Consider using “lang="en"” (or variant) instead.
Thailand TH