line 8 column 1 - Warning: <img> should use client-side image map
line 9 column 14 - Warning: <img> should use client-side image map
Info: Doctype given is "-//W3C//DTD HTML 4.01 Transitional//EN"
Info: Document content looks like HTML 4.01 Transitional
Tidy found 2 warnings and 0 errors!

Use client-side image maps in preference to server-side image
maps as the latter are inaccessible to people using non-
graphical browsers. In addition, client-side maps are easier
to set up and provide immediate feedback to users.

For further advice on how to make your pages accessible
see https://www.w3.org/WAI/GL.
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/
Lobby your company to join the W3C: https://www.w3.org/Consortium

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