Secretlab.co W3C HTML Markup Validation
HTML markup errors and warnings
(Rescan now...)
Errors:
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Duplicate ID “collapse-navigation”.
Element “li” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
End tag “div” seen, but there were open elements.
Unclosed element “section”.
Stray end tag “section”.
Stray end tag “div”.
End tag “section” seen, but there were open elements.
Unclosed element “div”.
Duplicate attribute “class”.
The “center” element is obsolete. Use CSS instead.
Duplicate attribute “alt”.
Warnings:
The first occurrence of ID “collapse-navigation” was here.
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.
United States US