Line to seperate content and sidebar

Hello!
I am working on my side https://www.stinna.dk
How do I add a line/border between content and sidebar?
I have tried this:
#content {
margin: 0 250px 0 20px;
border-right: 1px solid #CCC;
padding:15px;

But the line is now on the right side of the sidebar, i want i on the left side?

Another question. I have made a border on my menu. But i want a line like the small grey one on the right.

??