Warnings:
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).
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The first occurrence of ID “overlay” was here.
The first occurrence of ID “lightBox” was here.
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.
Errors:
Element “div” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
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.
Bad value “” for attribute “id” on element “iframe”: An ID must not be the empty string.
Bad value “100%” for attribute “width” on element “iframe”: Expected a digit but saw “%” instead.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Text not allowed in element “iframe” in this context.
Attribute “video” not allowed on element “div” at this point.
Bad value “” for attribute “src” on element “iframe”: Must be non-empty.
Element “a” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Self-closing syntax (“/>”) used on a non-void HTML element. Ignoring the slash and treating as a start tag.
End tag “section” seen, but there were open elements.
Unclosed element “ul”.
Duplicate ID “overlay”.
Duplicate ID “lightBox”.
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