Hi, I'm trying to change the borders in the style sheet of the template on my blog, but I've never done anything with css so I'm a little bit at a loss... I want to keep the dark background, but I want to create a small border with a slightly different color around my postings. If my guess is correct, then I should modify some of these definitions:

body {
  background:$bgcolor;
  margin:0;
  color:$textcolor;
  font: x-small "Trebuchet MS", Trebuchet, Verdana, Sans-serif;
  font-size/* */:/**/small;
  font-size: /**/small;
  text-align: center;
  }
a:link {
  color:$linkcolor;
  text-decoration:none;
  }
a:visited {
  color:$visitedlinkcolor;
  text-decoration:none;
  }
a:hover {
  color:$titlecolor;
  text-decoration:underline;
}
a img {
  border-width:0;
  }

Here is a pastie with the entire template I'm using: http://pastie.org/932535

Is there a quick way to achieve the desired effect? Your help is appreciated!