Mathpages.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Start tag seen without seeing a doctype first. Expected “<!DOCTYPE html>”.
The “bgcolor” attribute on the “body” element is obsolete. Use CSS instead.
The “text” attribute on the “body” element is obsolete. Use CSS instead.
The “link” attribute on the “body” element is obsolete. Use CSS instead.
The “vlink” attribute on the “body” element is obsolete. Use CSS instead.
The “alink” attribute on the “body” element is obsolete. Use CSS instead.
The “width” attribute on the “table” element is obsolete. Use CSS instead.
“td” start tag in table body.
The “width” attribute on the “td” element is obsolete.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.
End tag “a” violates nesting rules.
No “b” element in scope but a “b” end tag seen.
The “align” attribute on the “img” element is obsolete. Use CSS instead.
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