vertical lines separating columns

how to get vertical lines between columns which extend only upto text body?
I saw this in many forums..even in this forum (separating line between post and profile?
I want html/css code for that, help me

Hi, are you referring to the white line you see that separates our profile details and the post's content on this forum?

If so, then it can be defined by using this CSS code:

Code:

.postprofile {
    border-left: 1px solid #FFFFFF;

Base wrote:Hi, are you referring to the white line you see that separates our profile details and the post's content on this forum?

If so, then it can be defined by using this CSS code:

Code:

.postprofile {
    border-left: 1px solid #FFFFFF;

it's not working
i'm using phpbb2..
I tried both border left and right