How do I add a border-style to a shared border

[Christopher T.]

Is it not possible to add a style (css-vise) to a shared border?
I need to add a black solid line to the left shared border so it will be a
black line on the entire shared border. I have a menu in the left shared
border. I can of course insert a table in this border with a black line, but
it won't strech all over the page if the content "is larger" (vertical-vise).

I've looked at the html source, and found this:

<!--msnavigation--><table dir="ltr" border="0" cellpadding="0"
cellspacing="0" width="100%"><tr><td valign="top" width="1%">

I tried to manually change the code in notepad to this:

<!--msnavigation--><table dir="ltr" border="0" cellpadding="0"
cellspacing="0" width="100%"><tr><td valign="top" width="1%"
class="td_border_left_side">

I then got the black line I needed, even if the content is much "larger"
than the menu in the left shared folder.

Anyone? is Dynamic Web Template the only solution? I don't know anything
about DWT