.Tree {
  overflow-x: auto;
  overflow-y: auto;
  white-space: nowrap; /* prevent all wrapping */
  height: 100%;
  width: 100%;
  display: block;
  font-family: system-ui, -apple-system, "Segoe UI", Arial, sans-serif;
  font-size: 0.9rem;
  border: 1px solid black;
}

.TreeNode,
.TreeNodeCurrent {
  display: block;          /* one per line */
  white-space: nowrap;     /* no internal wrapping */
  overflow: visible;       /* important: no per-node scrollbars */
  margin: 0;
  text-indent: 4px;
  line-height: 1.4em;
}

.TreeNode svg,
.TreeNodeCurrent svg {
  vertical-align: middle;
  margin-right: 4px;
}

.Tree svg {
  pointer-events: none;
}

.TreeNodeImage {
  display: inline;
  margin-left: 0px;
  margin-right: 2px;
}

.TreeNodeLabel {
  display: inline;
  overflow: hidden;
}

.tree-icon, .book-icon {
  width: 14px;
  height: 14px;
  stroke: #333;
  stroke-width: 2;
}