Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The first occurrence of ID “Top-Main-Logo” was here.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
Element name “gcse:searchbox-only” cannot be represented as XML 1.0.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
This document appears to be written in Japanese but the “html” start tag has “lang="en"”. Consider using “lang="ja"” (or variant) instead.
Errors:
Duplicate ID “Top-Main-Logo”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “ga('send', 'event', 'TopNav207', 'ClickOnTopNav-202.htm” for attribute “onclick” on element “a”: unterminated string literal
Bad value “ga('send', 'event', 'TopNavplagiarism-check', 'ClickOnTopNavplagiarism-check.htm” for attribute “onclick” on element “a”: unterminated string literal
Element “div” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Bad value “” for attribute “id” on element “a”: An ID must not be the empty string.
Bad element name “gcse:searchbox-only”: Code point “U+003A” is not allowed
The “aria-labelledby” attribute must point to an element in the same document.
Japan JP