.item-rect {
  fill: #6baed6;
  stroke-width: 1px;
}
.item-text {
  fill: gray;
  font-size: 10px;
  text-anchor: middle;
  alignment-baseline: middle;
}
/* warehouse */
.wh-basic {
  stroke:gray;
  stroke-width: 1;
}
.wh-bin {
  stroke:blue;
  stroke-width: 0.5;
}

.conveyor {
  stroke:gray;
  stroke-width: 0.5;
}
.conveyor, .conveyor-open {
  fill:ivory;
}