I found this which would seemingly indicate that you just run
(setq org-html-table-caption-above nil)
if you want the caption to appear below the table. But it doesn't. How can I make the caption appear below the table
#+CAPTION: A table caption
#+ATTR_HTML: :border 2 :rules all :frame border
|---+---+---+---+---+---|
| 1 | 2 | 3 | 4 | 5 | 6 |
|---+---+---+---+---+---|
| T | T | F | T | F | T |
| | | | | | |
| | | | | | |
| | | | | | |
|---+---+---+---+---+---|
C-h v org-html-table-caption-above
to make sure that your setting has "taken".caption.t-bottom {...caption-side: bottom}
. I'm on 9.6 while the default clean is 9.5.5(?).