Qt-project.org W3C HTML Markup Validation
HTML markup errors and warnings
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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”.
Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.
Element “header” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Duplicate ID “”.
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 “span” in this context. (Suppressing further errors from this subtree.)
Element “footer” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Duplicate ID “Mainpage”.
Duplicate ID “Mainpage_Layout_V4_Active”.
Duplicate ID “Footer”.
Duplicate ID “Shape”.
Warnings:
The first occurrence of ID “” was here.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The first occurrence of ID “Mainpage” was here.
The first occurrence of ID “Mainpage_Layout_V4_Active” was here.
The first occurrence of ID “Footer” was here.
The first occurrence of ID “Shape” was here.
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