 ol {
  list-style-type: none;
  margin: 0;
  padding: 0;
}

#menu-toc > ol ol {
  padding-left: 0.75em;
}

#menu-toc li {
  text-overflow: ellipsis;
  overflow: hidden;
  white-space: nowrap;
}

#menu-toc .item-toggle {
  display: inline-block;
  transform: rotate(-45deg) translate(-5px, -5px);
  transition: transform 0.1s ease;
  text-align: center;
  width: 20px;

  color: #aab;

  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -khtml-user-select: none;
  -moz-user-select: none;
  -ms-user-s