line 8 column 1 - Info: value for attribute "align" missing quote marks
line 14 column 1 - Info: value for attribute "shape" missing quote marks
line 19 column 1 - Info: value for attribute "shape" missing quote marks
line 25 column 1 - Info: value for attribute "height" missing quote marks
line 25 column 1 - Info: value for attribute "width" missing quote marks
line 25 column 1 - Info: value for attribute "border" missing quote marks
Info: Doctype given is "-//W3C//DTD HTML 4.0 Transitional//EN"
Info: Document content looks like HTML 4.01 Transitional
No warnings or errors were found.

About HTML Tidy: https://github.com/htacg/tidy-html5
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Official mailing list: https://lists.w3.org/Archives/Public/public-htacg/
Latest HTML specification: https://html.spec.whatwg.org/multipage/
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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
