.bi-display-tree .ztree * {
  color: #999999;
}
.bi-display-tree .ztree li span.button.switch.center_open {
  background-image: url("https://fanruan.coding.me/fineui/dist/images/1x//icon/tree-vertical-line-3.png");
}
.bi-display-tree .ztree li span.button.switch.roots_open {
  background-image: url("https://fanruan.coding.me/fineui/dist/images/1x//icon/tree-vertical-line-2.png");
}
.bi-display-tree .ztree li span.button.switch.bottom_open {
  background-image: url("https://fanruan.coding.me/fineui/dist/images/1x//icon/tree-vertical-line-4.png");
}
.bi-display-tree .ztree li a,
.bi-display-tree .ztree li span {
  cursor: default !important;
}
.bi-display-tree .ztree li a:hover {
  text-decoration: none;
}
.bi-display-tree .ztree li a.curSelectedNode {
  padding-top: 1px;
  border: none;
  background-color: inherit;
  opacity: 1;
  filter: alpha(opacity=100);
}