line 10 column 1 - Warning: <pre> isn't allowed in <table> elements
line 9 column 1 - Info: <table> previously mentioned
line 13 column 1 - Warning: plain text isn't allowed in <table> elements
line 9 column 1 - Info: <table> previously mentioned
line 14 column 1 - Warning: discarding unexpected </pre>
Info: Doctype given is "-//W3C//DTD HTML 4.01//EN"
Info: Document content looks like HTML 4.01 Strict
Tidy found 3 warnings and 0 errors!

About HTML Tidy: https://github.com/htacg/tidy-html5
Bug reports and comments: https://github.com/htacg/tidy-html5/issues
Official mailing list: https://lists.w3.org/Archives/Public/public-htacg/
Latest HTML specification: https://html.spec.whatwg.org/multipage/
Validate your HTML documents: https://validator.w3.org/nu/
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Do you speak a language other than English, or a different variant of 
English? Consider helping us to localize HTML Tidy. For details please see 
https://github.com/htacg/tidy-html5/blob/master/README/LOCALIZE.md
