body {
  /* padding-top: 70px; */
  /* padding-bottom: 30px; */
}

.theme-dropdown .dropdown-menu {
  display: block;
  position: static;
  margin-bottom: 20px;
}

.theme-showcase > p > .btn {
  margin: 5px 0;
}

.tree {
  margin: 18px;
  padding: 0;
}
.tree:not(:empty):before, .tree:not(:empty):after,
.tree ul:not(:empty):before, .tree ul:not(:empty):after,
.tree li:not(:empty):before, .tree li:not(:empty):after {
  display: block;
  position: absolute;
  content: "";
}
.tree ul, .tree li {
  position: relative;
  margin: 0;
  padding: 0;
}
.tree li {
  list-style: none;
}
.tree li > div {
  background-color: #eee;
  color: #222;
  padding: 5px;
  display: inline-block;
}
.tree.cascade li {
  margin-left: 24px;
}
.tree.cascade li div {
  margin-top: 12px;
}
.tree.cascade li:before {
  border-left: 1px solid #ddd;
  height: 100%;
  width: 0;
  top: 0;
  left: -12px;
}
.tree.cascade li:after {
  border-top: 1px solid #ddd;
  width: 12px;
  left: -12px;
  top: 24px;
}
.tree.cascade li:last-child:before {
  height: 24px;
  top: 0;
}
.tree.cascade > li:first-child:before {
  top: 24px;
}
.tree.cascade > li:only-child {
  margin-left: 0;
}
.tree.cascade > li:only-child:before, .tree.cascade > li:only-child:after {
  content: none;
}
.tree.horizontal li {
  display: flex;
  align-items: center;
  margin-left: 24px;
}
.tree.horizontal li div {
  margin: 6px 0;
}
.tree.horizontal li:before {
  border-left: 1px solid #ddd;
  height: 100%;
  width: 0;
  top: 0;
  left: -12px;
}
.tree.horizontal li:first-child:before {
  height: 50%;
  top: 50%;
}
.tree.horizontal li:last-child:before {
  height: 50%;
  bottom: 50%;
  top: auto;
}
.tree.horizontal li:after, .tree.horizontal li ul:after {
  border-top: 1px solid #ddd;
  height: 0;
  width: 12px;
  top: 50%;
  left: -12px;
}
.tree.horizontal li:only-child:before {
  content: none;
}
.tree.horizontal li ul:after {
  left: 0;
}
.tree.horizontal > li:only-child {
  margin-left: 0;
}
.tree.horizontal > li:only-child:before, .tree.horizontal > li:only-child:after {
  content: none;
}
.tree.vertical {
  display: flex;
}
.tree.vertical ul {
  display: flex;
  justify-content: center;
}
.tree.vertical li {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.tree.vertical li div {
  margin: 12px 6px;
}
.tree.vertical li:before {
  border-left: 1px solid #ddd;
  height: 12px;
  width: 0;
  top: 0;
}
.tree.vertical li:after {
  border-top: 1px solid #ddd;
  height: 0;
  width: 100%;
}
.tree.vertical li:first-child:after {
  border-top: 1px solid #ddd;
  height: 0;
  width: 50%;
  left: 50%;
}
.tree.vertical li:last-child:after {
  border-top: 1px solid #ddd;
  height: 0;
  width: 50%;
  right: 50%;
}
.tree.vertical li:only-child:after {
  content: none;
}
.tree.vertical li ul:before {
  border-left: 1px solid #ddd;
  height: 12px;
  width: 0;
  top: -12px;
}
.tree.vertical > li:only-child:before, .tree.vertical > li:only-child:after {
  content: none;
}
.tree.vertical.cascade-4 > li > ul > li > ul > li > ul > li, .tree.vertical.cascade-3 > li > ul > li > ul > li, .tree.vertical.cascade-2 > li > ul > li, .tree.vertical.cascade-1 > li, .tree.vertical .cascade {
  flex-direction: column;
  align-items: start;
  padding: 0 12px;
}
.tree.vertical.cascade-4 > li > ul > li > ul > li > ul > li:before, .tree.vertical.cascade-3 > li > ul > li > ul > li:before, .tree.vertical.cascade-2 > li > ul > li:before, .tree.vertical.cascade-1 > li:before, .tree.vertical .cascade:before {
  left: 24px;
}
.tree.vertical.cascade-4 > li > ul > li > ul > li > ul > li:after, .tree.vertical.cascade-3 > li > ul > li > ul > li:after, .tree.vertical.cascade-2 > li > ul > li:after, .tree.vertical.cascade-1 > li:after, .tree.vertical .cascade:after {
  left: 0;
}
.tree.vertical.cascade-4 > li > ul > li > ul > li > ul > li:first-child:after, .tree.vertical.cascade-3 > li > ul > li > ul > li:first-child:after, .tree.vertical.cascade-2 > li > ul > li:first-child:after, .tree.vertical.cascade-1 > li:first-child:after, .tree.vertical .cascade:first-child:after {
  left: 24px;
  width: 100%;
}
.tree.vertical.cascade-4 > li > ul > li > ul > li > ul > li:last-child:after, .tree.vertical.cascade-3 > li > ul > li > ul > li:last-child:after, .tree.vertical.cascade-2 > li > ul > li:last-child:after, .tree.vertical.cascade-1 > li:last-child:after, .tree.vertical .cascade:last-child:after {
  left: 0;
  width: 24px;
}
.tree.vertical.cascade-4 > li > ul > li > ul > li > ul > li ul, .tree.vertical.cascade-3 > li > ul > li > ul > li ul, .tree.vertical.cascade-2 > li > ul > li ul, .tree.vertical.cascade-1 > li ul, .tree.vertical .cascade ul, .tree.vertical.cascade-4 > li > ul > li > ul > li > ul > li li, .tree.vertical.cascade-3 > li > ul > li > ul > li li, .tree.vertical.cascade-2 > li > ul > li li, .tree.vertical.cascade-1 > li li, .tree.vertical .cascade li {
  display: block;
}
.tree.vertical.cascade-4 > li > ul > li > ul > li > ul > li ul:before, .tree.vertical.cascade-3 > li > ul > li > ul > li ul:before, .tree.vertical.cascade-2 > li > ul > li ul:before, .tree.vertical.cascade-1 > li ul:before, .tree.vertical .cascade ul:before, .tree.vertical.cascade-4 > li > ul > li > ul > li > ul > li ul:after, .tree.vertical.cascade-3 > li > ul > li > ul > li ul:after, .tree.vertical.cascade-2 > li > ul > li ul:after, .tree.vertical.cascade-1 > li ul:after, .tree.vertical .cascade ul:after,
.tree.vertical.cascade-4 > li > ul > li > ul > li > ul > li li:before,
.tree.vertical.cascade-3 > li > ul > li > ul > li li:before,
.tree.vertical.cascade-2 > li > ul > li li:before,
.tree.vertical.cascade-1 > li li:before,
.tree.vertical .cascade li:before, .tree.vertical.cascade-4 > li > ul > li > ul > li > ul > li li:after, .tree.vertical.cascade-3 > li > ul > li > ul > li li:after, .tree.vertical.cascade-2 > li > ul > li li:after, .tree.vertical.cascade-1 > li li:after, .tree.vertical .cascade li:after {
  border: none;
}
.tree.vertical.cascade-4 > li > ul > li > ul > li > ul > li div, .tree.vertical.cascade-3 > li > ul > li > ul > li div, .tree.vertical.cascade-2 > li > ul > li div, .tree.vertical.cascade-1 > li div, .tree.vertical .cascade div {
  margin: 0;
  margin-top: 12px;
}
.tree.vertical.cascade-4 > li > ul > li > ul > li > ul > li li, .tree.vertical.cascade-3 > li > ul > li > ul > li li, .tree.vertical.cascade-2 > li > ul > li li, .tree.vertical.cascade-1 > li li, .tree.vertical .cascade li {
  margin-left: 24px;
}
.tree.vertical.cascade-4 > li > ul > li > ul > li > ul > li li:before, .tree.vertical.cascade-3 > li > ul > li > ul > li li:before, .tree.vertical.cascade-2 > li > ul > li li:before, .tree.vertical.cascade-1 > li li:before, .tree.vertical .cascade li:before {
  border-left: 1px solid #ddd;
  height: 100%;
  width: 0;
  top: 0;
  left: -12px;
}
.tree.vertical.cascade-4 > li > ul > li > ul > li > ul > li li:after, .tree.vertical.cascade-3 > li > ul > li > ul > li li:after, .tree.vertical.cascade-2 > li > ul > li li:after, .tree.vertical.cascade-1 > li li:after, .tree.vertical .cascade li:after {
  border-top: 1px solid #ddd;
  width: 12px;
  height: 0;
  left: -12px;
  top: 24px;
  content: "";
}
.tree.vertical.cascade-4 > li > ul > li > ul > li > ul > li li:last-child:before, .tree.vertical.cascade-3 > li > ul > li > ul > li li:last-child:before, .tree.vertical.cascade-2 > li > ul > li li:last-child:before, .tree.vertical.cascade-1 > li li:last-child:before, .tree.vertical .cascade li:last-child:before {
  height: 24px;
  top: 0;
}