line 1 column 1 - Warning: missing declaration line 1 column 1 - Warning: inserting implicit line 1 column 1 - Warning: missing before line 1 column 1 - Warning: inserting missing 'title' element line 1 column 1 - Warning: trimming empty line 3 column 1 - Warning: trimming empty line 2 column 1 - Warning: trimming empty <ul> Info: Document content looks like HTML5 Tidy found 9 warnings and 0 errors! One or more empty elements were present in the source document but dropped on output. If these elements are necessary or you don't want this behavior, then consider setting the option "drop-empty-elements" to no. 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