table.treetable span.indenter {
  display: inline-block;
  margin: 0;
  padding: 0;
  text-align: right;

  /* Disable text selection of nodes (for better D&D UX) */
  user-select: none;
  -khtml-user-select: none;
  -moz-user-select: none;
  -o-user-select: none;
  -webkit-user-select: none;

  /* Force content-box box model for indenter (Bootstrap compatibility) */
  -webkit-box-sizing: content-box;
  -moz-box-sizing: content-box;
  box-sizing: content-box;
  margin-right: 4px;
  width: 12px;
  color: #000;
}

table.treetable span.indenter a {
  background-position: left center;
  background-repeat: no-repeat;
  display: inline-block;
  text-decoration: none;
  width: 14px;
  color: #000;

  font:normal normal normal 14px/1 FontAwesome;
  font-size:inherit;
  text-rendering:auto;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale
}
table.treetable tr.collapsed span.indenter a:before{content:"\f196"}
table.treetable tr.expanded span.indenter a:before{content:"\f147"}
table.treetable tr.leaf span.indenter:before{content:"--"}