tripal/tripal_ds/theme/css/tripaldsfeature.css

.ds-top {
  width: 100%;
  border-bottom: 1px solid grey;
}

.ds-left {
  width: 25%;
  float: left;
  border-right: 1px solid grey;

}

.ds-right {
  width: 73%;
  float: right;
}

.ds-bottom {
  width: 100%;
}