Errors:
Quirky doctype. Expected “<!DOCTYPE html>”.
The “width” attribute on the “table” element is obsolete. Use CSS instead.
The “cellpadding” attribute on the “table” element is obsolete. Use CSS instead.
The “cellspacing” attribute on the “table” element is obsolete. Use CSS instead.
The “border” attribute on the “table” element is obsolete. Use CSS instead.
The “valign” attribute on the “td” element is obsolete. Use CSS instead.
Duplicate attribute “alt”.
Duplicate attribute “border”.
The “align” attribute on the “td” element is obsolete. Use CSS instead.
Attribute “framespacing” not allowed on element “iframe” at this point.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
Text not allowed in element “iframe” in this context.
The “font” element is obsolete. Use CSS instead.
A numeric character reference expanded to the C1 controls range.
Stray end tag “font”.
Bad value “cgi-bin/prot/search.cgi?query=protein extraction” for attribute “href” on element “a”: Illegal character in query: space is not allowed.
Bad value “cgi-bin/prot/search.cgi?query=western blot” for attribute “href” on element “a”: Illegal character in query: space is not allowed.
The “align” attribute on the “div” element is obsolete. Use CSS instead.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
The “width” attribute on the “td” element is obsolete. Use CSS instead.
Stray end tag “td”.
Stray end tag “tr”.
Element “li” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Saw “<!--” within a comment. Probable cause: Nested comment (not allowed).
Warnings:
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
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