Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
The element “input” must not appear as a descendant of the “a” element.
Attribute “rel” not allowed on element “ul” at this point.
Element “div” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
No space between attributes.
Quote “'” in attribute name. Probable cause: Matching quote missing somewhere earlier.
Bad value “” for attribute “for” on element “label”: An ID must not be the empty string.
Attribute “rel” not allowed on element “input” at this point.
Duplicate ID “modal-label”.
The “font” element is obsolete. Use CSS instead.
Attribute “alt” not allowed on element “a” at this point.
Bad value “” for attribute “target” on element “a”: Browsing context name must be at least one character long.
Stray start tag “script”.
The “for” attribute of the “label” element must refer to a non-hidden form control.
Warnings:
The “navigation” role is unnecessary for element “nav”.
Attribute “prism'” is not serializable as XML 1.0.
Attribute “orb'” is not serializable as XML 1.0.
The “form” role is unnecessary for element “form”.
The first occurrence of ID “modal-label” was here.
Empty heading.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.
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