Errors:
Element “meta” is missing one or more of the following attributes: “content”, “property”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Text not allowed in element “ul” in this context.
Duplicate ID “test-navbar-collapse-1”.
Element “ul” is missing one or more of the following attributes: “role”.
Discarding superfluous token “document” from value of attribute “role”. Browsers only process the first token found that is a defined ARIA non-abstract role.
Bad value “tabpanel” for attribute “role” on element “li”.
Element “bold” not allowed as child of element “a” in this context. (Suppressing further errors from this subtree.)
Element “div” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Named character reference was not terminated by a semicolon. (Or “&” should have been escaped as “&”.)
The “center” element is obsolete. Use CSS instead.
Attribute “tel” not allowed on element “span” at this point.
Bad value “true” for attribute “checked” on element “input”.
Self-closing syntax (“/>”) used on a non-void HTML element. Ignoring the slash and treating as a start tag.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The first occurrence of ID “test-navbar-collapse-1” was here.
Attribute “aria-activedescendant” value should either refer to a descendant element, or should be accompanied by attribute “aria-owns”.
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.
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