.gb
{
  border-width:2px;
  border-style:solid;
  border-color:#8080C0;  
}
.bb /* bb = black border */
{
  border-width:1px 1px 1px 1px;
  border-style:solid;
  border-color:#000000;
  border-collapse:collapse;
}
.bb2 /* bb = black border */
{
  border-width:1px 0px 0px 1px;
  border-style:solid;
  border-color:#000000;
  border-collapse:collapse;
}
.bb3 /* bb = black border */
{
  border-width:0px 0px 0px 1px;
  border-style:solid;
  border-color:#000000;
  border-collapse:collapse;
}