Errors:
Obsolete doctype. Expected “<!DOCTYPE html>”.
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
Bad value “android-chrome-36x36” for attribute “rel” on element “link”: The string “android-chrome-36x36” is not a registered keyword.
Bad value “android-chrome-48x48” for attribute “rel” on element “link”: The string “android-chrome-48x48” is not a registered keyword.
Bad value “android-chrome-72x72” for attribute “rel” on element “link”: The string “android-chrome-72x72” is not a registered keyword.
Bad value “android-chrome-96x96” for attribute “rel” on element “link”: The string “android-chrome-96x96” is not a registered keyword.
Bad value “android-chrome-144x144” for attribute “rel” on element “link”: The string “android-chrome-144x144” is not a registered keyword.
Bad value “android-chrome-192x192” for attribute “rel” on element “link”: The string “android-chrome-192x192” is not a registered keyword.
Bad value “mstile-70x70” for attribute “rel” on element “link”: The string “mstile-70x70” is not a registered keyword.
A “link” element with a “sizes” attribute must have a “rel” attribute that contains the value “icon” or the value “apple-touch-icon”.
Bad value “mstile-144x144” for attribute “rel” on element “link”: The string “mstile-144x144” is not a registered keyword.
Bad value “mstile-150x150” for attribute “rel” on element “link”: The string “mstile-150x150” is not a registered keyword.
Bad value “mstile-310x150” for attribute “rel” on element “link”: The string “mstile-310x150” is not a registered keyword.
Bad value “mstile-310x310” for attribute “rel” on element “link”: The string “mstile-310x310” is not a registered keyword.
Attribute “xml:space” not allowed on element “script” at this point.
The “shape” attribute on the “a” element is obsolete. Use “area” instead of “a” for image maps.
Bad value “menu” for attribute “role” on element “nav”.
Bad value “open” for attribute “rel” on element “a”: The string “open” is not a registered keyword.
Attribute “rel” not allowed on element “div” at this point.
Bad value “close” for attribute “rel” on element “a”: The string “close” is not a registered keyword.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
Attribute “xml:space” is not serializable as XML 1.0.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
This document appears to be written in Japanese. Consider adding “lang="ja"” (or variant) to the “html” start tag.
Japan JP