.dep-tree-bar {
  position: relative;
  min-height: 80px;
  max-height: 500px;
  overflow: auto;
  margin-top: 5px;
}
.dep-tree-bar::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
.dep-tree-bar::-webkit-scrollbar-thumb {
  border-radius: 4px;
  -webkit-box-shadow: inset 0 0 2px #d1d1d1;
  background: #e4e4e4;
}