Psychologyschoolguide.net W3C HTML Markup Validation
HTML markup errors and warnings
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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 “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
No space between attributes.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “area” is missing required attribute “alt”.
Bad value “” for attribute “action” on element “form”: Must be non-empty.
The “align” attribute on the “div” element is obsolete. Use CSS instead.
Duplicate ID “content-boxx”.
Duplicate ID “left-nav”.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
The first occurrence of ID “content-boxx” was here.
The first occurrence of ID “left-nav” was here.
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.
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