Rick,
   Do you mean that  <table border="2"> and <table style="border:2px">
don't mean the same thing? Their names suggest they do the same things.
That's a terrible naming. Changing the former to the latter does fix the
problem though. Why is that?

Using the #+HTML_HEAD_EXTRA options as you suggest can also fix the
problem. But could you explain why using the HTML_HEAD_EXTRA is more
advisable than setting the <table style="border:2px"> directly as table
attributes? What would you suggest if we want some tables have orders and
others don't have borders in the same html webpage?

Thank you.

Shiyuan


>    Org mode generated this line in the html for table but the border is
> not
> >    displayed,Â
> >    <table border="2" cellspacing="0" cellpadding="6" rules="groups"
> >    frame="hsides">
>
> The "border" attribute has nothing to do with it. It's the "frame"
> attribute
> which sets the default top and bottom borders.
>


> >    If we use css style to specify the border, Â the table border would
> show
> >    up:Â
> >    <table style="border:2px" cellspacing="0" cellpadding="6"
> rules="groups"
> >    frame="hsides">
>
> No. The CSS should be in the header, not an attribute of the tag. Have you
> tried setting the 'HTML_HEAD_EXTRA' option?  somehting like:
> #+HTML_HEAD_EXTRA: <style type="text/css">
> #+HTML_HEAD_EXTRA: table {border-left: 1px solid black; border-right: 1px
> solid black;}
> #+HTML_HEAD_EXTRA: </style>
>
>
> rick
>