How To Change BB Codes CSS

.csharpcode {
  margin: 10px 0;
  border: 1px dashed #ccc;
  background-color: #fff;
  padding: 10px;
  font-family: "Courier New", Courier, monospace;
  color: #000;

  white-space: pre-wrap;
  word-wrap: break-word;
}

.csharpcode .rem {
  color: green;
}

.csharpcode .kwrd {
  color: #00f;
}

.csharpcode .str {
  color: #006080;
}

.csharpcode .op {
  color: #00c;
}

.csharpcode .preproc {
  color: #c63;
}

.csharpcode .asp {
  background-color: #ff0;
}

.csharpcode .html {
  color: maroon;
}

.csharpcode .attr {
  color: red;
}

.csharpcode .alt {
  width: 100%;
  margin: 0;
  background-color: #f6f6f6;
}

.csharpcode .lnum {
  color: #666;
}