Psychonomic.org W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Duplicate ID “header”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “div” not allowed as child of element “button” in this context. (Suppressing further errors from this subtree.)
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
The “clear” attribute on the “br” element is obsolete. Use CSS instead.
Attribute “alt” not allowed on element “a” at this point.
Warnings:
The first occurrence of ID “header” was here.
The “textbox” role is unnecessary for an “input” element that has no “list” attribute and whose type is “text”.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
This document appears to be written in Catalan but the “html” start tag has “lang="en"”. Consider using “lang="ca"” (or variant) instead.
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