tree-node-renderer.scss

.node {
  width: 50%;
  white-space: nowrap;
  position: relative;
  text-align: left;
  min-width: 100%;
  overflow: hidden;
}

.nodeContent {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 80%;
}

.validDrop {
  background: #26C281;
}

.invalidDrop {
  background: #C0392B;
}

.highlight {
  background: rgba(240, 240, 240, 0.7);
  height: 100%;
  cursor: pointer;
}