Errors:
Obsolete doctype. Expected “<!DOCTYPE html>”.
A document must not include both a “meta” element with an “http-equiv” attribute whose value is “content-type”, and a “meta” element with a “charset” attribute.
A document must not include more than one “meta” element with a “http-equiv” attribute whose value is “content-type”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Duplicate ID “chooseimg”.
End tag “div” seen, but there were open elements.
Unclosed element “form”.
Stray end tag “form”.
End tag “li” seen, but there were open elements.
Unclosed element “div”.
Malformed byte sequence: “a3”.
Stray end tag “div”.
Bad value “100%” for attribute “width” on element “img”: Expected a digit but saw “%” instead.
Bad value “” for attribute “src” on element “img”: Must be non-empty.
Malformed byte sequence: “91”.
Malformed byte sequence: “92”.
Malformed byte sequence: “f6”.
The “center” element is obsolete. Use CSS instead.
Unclosed element “center”.
The “aria-labelledby” attribute must point to an element in the same document.
Warnings:
The “navigation” role is unnecessary for element “nav”.
Empty heading.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The first occurrence of ID “chooseimg” was here.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).
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