div.leftside {
  width: 50%;
  padding: 0px 15px 0px 15px;
  border-right: inset var(--docset-color);
  float: left;
}

div.rightside {
  margin-left: 50%;
  padding: 0px 15px 0px 15px;
  /* float: right; */
}

/* Clear floats after the columns */
div.twocol:after {
  content: "";
  display: table;
  clear: both;
}