Errors:
When the attribute “xml:lang” in no namespace is specified, the element must also have the attribute “lang” present with the same value.
The “version” attribute on the “html” element is obsolete. You can safely omit it.
The “profile” attribute on the “head” element is obsolete. To declare which “meta” terms are used in the document, instead register the names as meta extensions. To trigger specific UA behaviors, use a “link” element instead.
No “p” element in scope but a “p” end tag seen.
Stray end tag “a”.
Bad value “<a href="http://www.rasc.ca/telescope">Click here for more info!</a> ” for attribute “longdesc” on element “img”: Illegal character in path segment: space is not allowed.
The “longdesc” attribute on the “img” element is obsolete. Use a regular “a” element to link to the description.
Bad value “<a href="http://design.tshirtelephant.com/rasc/shop/home">Check out our brand NEW WebStore!</a> ” for attribute “longdesc” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “<a href="https://www.rasc.ca/2018">https://www.rasc.ca/2018</a>” for attribute “longdesc” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “Please see our <a href="https://secure.rasc.ca/Portal/Donate/RASC/Fundraising/Donate_Public.aspx">donations</a> page to learn more!” for attribute “longdesc” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “” for attribute “longdesc” on element “img”: Must be non-empty.
End tag “div” seen, but there were open elements.
Unclosed element “ul”.
Stray end tag “ul”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Warnings:
Empty heading.
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.
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