seltab.css

.tabheader {
  border-collapse: collapse; /* for IE */
  border-spacing: 0; /* for N6 */
}

.tabheader div {
  display: inline;
  margin:0;
  padding:0;
}

.tabheader .close {
  border-style: solid;
  border-width: 1px; 
  border-color: #000;
  background-color: #ccc;
  margin:0;
  padding: 0.5em;
  white-space: nowrap;
}
.tabheader .open {
  border-style: solid;
  border-width: 1px; 
  border-color: #000 #000 transparent #000;
  background-color: transparent;
  margin:0;
  padding: 0.5em;
  white-space: nowrap;
}
.tabheader .space {
  border-style: solid;
  border-width: 1px 0 1px 0;
  border-color: transparent transparent #000 transparent;
  margin:0;
  padding: 0.5em;
  white-space: nowrap;
}
.tabheader div.restspace {
  border-style: solid;
  border-width: 1px 0 1px 0;
  border-color: transparent transparent #000 transparent;
  margin:0;
  padding: 0.5em;
  white-space: nowrap;
  width: 100%;
}

.tabheader a { text-decoration: none; }

.tabbody {
  border-color: black;
  border-style: solid;
  border-width: 0px 0px 4px 1px;
  border-style: double;
  padding: 1em;
}
.tabbody textarea {
  width: 100%;
}