Well, I've tried so many different ideas I don't know if I can remember them all. However, all attempts (in their various forms) have been to modify:
padding: 0 0 20px 45px;
margin: 0px 0 0;
padding: 20px 0 10px 0;
I have tried making .narrowcolumn float right. I have tried making #sidebar have no margin-left or even no margin-left and a large margin-right. I have tried to modify both .narrowcolumn and #sidebar at the same time.
Nothing. Not a thing. I refresh my browser and I see no change in the visual display. This does not make sense.
I am modifying the CSS from within the WP admin interface and I'm beginning to wonder if this is somehow not taking.
. . . Or maybe I still haven't changed either .narrowcolumn or #sidebar correctly. Any help would be great.