Photo-studio9.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
Element “link” is missing one or more of the following attributes: “itemprop”, “property”, “rel”.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Element “gcse:search” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Duplicate ID “menu-sidemenu”.
Element “li” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Duplicate attribute “class”.
The “itemprop” attribute was specified, but the element is not a property of any item.
Warnings:
Element name “gcse:search” cannot be represented as XML 1.0.
The first occurrence of ID “menu-sidemenu” was here.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
This document appears to be written in Japanese. Consider adding “lang="ja"” (or variant) to the “html” start tag.
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