How to Write HTML, Part 3: Formatting Structural Content71Brad YaleBlessie AdlaonFollowNov 2, 2017 · 1 min readCool. First time I’ve seen the <th> tag. If instead of <td> I used <th> on the first item nested in each <tr>, will I end up with a first column all in bold? Would that help my SEO as well? What if I want my first column to be left aligned?