.node-menu {
    position: relative;
    width: 150px;
  }
  
  .node-menu .node-menu-content {
    width: 100%;
    padding: 5px;
    position: absolute;
    border: 1px solid #bdbdbd;
    border-radius: 5%;
    box-shadow: 0 0 5px #bdbdbd;
    background-color: #eee;
    color: #212121;
    font-family: var(--font-family);
    z-index: 999;
  }
  
  .node-menu .node-menu-content li.node-menu-item {
    list-style: none;
    padding: 3px;
  }
  
  .node-menu .node-menu-content .node-menu-item:hover {
    border-radius: 5%;
    opacity: unset;
    cursor: pointer;
    background-color: #bdbdbd;
    transition: background-color 0.2s ease-out;
  }
  
  .node-menu .node-menu-content .node-menu-item .node-menu-item-icon {
    display: inline-block;
    width: 16px;
  }
  
  .node-menu .node-menu-content .node-menu-item .node-menu-item-icon.new-tag:before {
    content: '\25CF';
  }
  .node-menu .node-menu-content .node-menu-item .node-menu-item-icon.new-folder:before {
    content: '\25B6';
  }
  
  .node-menu .node-menu-content .node-menu-item .node-menu-item-icon.rename:before {
    content: '\270E';
  }
  
  .node-menu .node-menu-content .node-menu-item .node-menu-item-icon.remove:before {
    content: '\2716';
  }
  
  .node-menu .node-menu-content .node-menu-item .node-menu-item-value {
    margin-left: 5px;
  }
  
  tree-internal ul {
    padding: 3px 0 3px 25px;
  }
  
  tree-internal li {
    padding: 0;
    margin: 0;
    list-style: none;
  }
  
  tree-internal .over-drop-target {
    border: 4px solid #757575;
    transition: padding 0.2s ease-out;
    padding: 5px;
    border-radius: 5%;
  }
  
  tree-internal .tree {
    box-sizing: border-box;
    font-family: var(--font-family);
  }
  
  tree-internal .tree li {
    list-style: none;
    cursor: default;
  }
  
  tree-internal .tree li div {
    display: inline-block;
    box-sizing: border-box;
  }
  
  tree-internal .tree .node-value {
    display: inline-block;
    color: #212121;
  }
  
  tree-internal .tree .node-value:after {
    display: block;
    padding-top: -3px;
    width: 0;
    height: 2px;
    background-color: #212121;
    content: '';
    transition: width 0.3s;
  }
  
  tree-internal .tree .node-value:hover:after {
    width: 100%;
  }
  
  tree-internal .tree .node-left-menu {
    display: inline-block;
    height: 100%;
    width: auto;
  }
  
  tree-internal .tree .node-left-menu span:before {
    content: '\2026';
    color: #757575;
  }
  
  tree-internal .tree .node-selected:after {
    width: 100%;
  }
  
  tree-internal .tree .folding {
    width: 25px;
    display: inline-block;
    line-height: 1px;
    padding: 0 5px;
    font-weight: bold;
  }
  
  tree-internal .tree .folding.node-collapsed {
    cursor: pointer;
  }
  
  tree-internal .tree .folding.node-collapsed:before {
    content: '\25B6';
    color: #757575;
  }
  
  tree-internal .tree .folding.node-expanded {
    cursor: pointer;
  }
  
  tree-internal .tree .folding.node-expanded:before {
    content: '\25BC';
    color: #757575;
  }
  
  tree-internal .tree .folding.node-empty {
    color: #212121;
    text-align: center;
    font-size: 0.89em;
  }
  
  tree-internal .tree .folding.node-empty:before {
    content: '\25B6';
    color: #757575;
  }
  
  tree-internal .tree .folding.node-leaf {
    color: #212121;
    text-align: center;
    font-size: 0.89em;
  }
  
  tree-internal .tree .folding.node-leaf:before {
    content: '\25CF';
    color: #757575;
  }
  
  tree-internal ul.rootless {
    padding: 0;
  }
  
  tree-internal div.rootless {
    display: none !important;
  }
  
  tree-internal .loading-children:after {
    content: ' loading ...';
    color: #6a1b9a;
    font-style: italic;
    font-size: 0.9em;
    animation-name: loading-children;
    animation-duration: 2s;
    animation-timing-function: ease-in-out;
    animation-iteration-count: infinite;
  }
  
  @keyframes loading-children {
    0%    { color: #f3e5f5; }
    12.5% { color: #e1bee7; }
    25%   { color: #ce93d8; }
    37.5% { color: #ba68c8; }
    50%   { color: #ab47bc; }
    62.5% { color: #9c27b0; }
    75%   { color: #8e24aa; }
    87.5% { color: #7b1fa2; }
    100%  { color: #6a1b9a; }
  }