Yes, it seems to be related to the browser or css style stuff.  In fact, for the attached html in  Thorsten's previous email, the two boundaries vertical lines are also missing in my Google Chrome or Firefox.  Thanks. 

This is the example directed from copy-paste. 

|   |  N | N^2 | N^3 | N^4 | sqrt(n) | sqrt[4](N) |
|---+----+-----+-----+-----+---------+------------|
| / | <> |   < |     |   > |       < |          > |
| # |  1 |   1 |   1 |   1 |       1 |          1 |
| # |  2 |   4 |   8 |  16 |  1.4142 |     1.1892 |
| # |  3 |   9 |  27 |  81 |  1.7321 |     1.3161 |
|---+----+-----+-----+-----+---------+------------|
This is my minimal config, Emacs start with '-Q  -l "~/myorg.el" which is 

(package-initialize)
(org-babel-do-load-languages
 'org-babel-load-languages
 '((python . t)
   (emacs-lisp . t)
   (latex . t)))



On Tue, Jun 10, 2014 at 6:23 AM, Rick Frankel <rick@rickster.com> wrote:
On 2014-06-07 17:15, Shiyuan wrote:
    I am following the manual
example http://orgmode.org/worg/org-tutorials/tables.html [1]. But the

two vertical boundary line on the very left and right 
is not showing up when exported to html.  Anything I am missing? Thanks. 

My guess is that it is related to the css being used to style the table
in your setup.

Could you post a minimal example with the html output?

rick