Variable: org-html-table-align-individual-fields
org-html-table-align-individual-fields is a customizable variable
defined in ox-html.el.gz.
Value
t
Documentation
Non-nil means attach style attributes for alignment to each table field.
When nil, alignment will only be specified in the column tags, but this is ignored by some browsers (like Firefox, Safari). Opera does it right though.
Source Code
;; Defined in /usr/src/emacs/lisp/org/ox-html.el.gz
(defcustom org-html-table-align-individual-fields t
"Non-nil means attach style attributes for alignment to each table field.
When nil, alignment will only be specified in the column tags, but this
is ignored by some browsers (like Firefox, Safari). Opera does it right
though."
:group 'org-export-html
:type 'boolean)