Diseasemaps.org W3C HTML Markup Validation
HTML markup errors and warnings
(Rescan now...)
Errors:
Duplicate ID “btn-map3b”.
The element “button” must not appear as a descendant of the “a” element.
Duplicate ID “btn-advice”.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Element “div” not allowed as child of element “h3” in this context. (Suppressing further errors from this subtree.)
Duplicate ID “dropdownMenu2”.
Element “script” must not have attribute “async” unless attribute “src” is also specified.
The text content of element “script” was not in the required format: Expected space, tab, newline, or slash but found “{” instead.
Warnings:
The first occurrence of ID “btn-map3b” was here.
The first occurrence of ID “btn-advice” was here.
The first occurrence of ID “dropdownMenu2” was here.
Russian Federation RU