.css-treeview ul,
.css-treeview li {
  padding: 0;
  margin: 0;
  list-style: none;
  white-space: nowrap
}
 
.css-treeview input {
  position: absolute;
  opacity: 0;
  width: 32px;
}
 
.css-treeview {
  font: normal 0.8em Arial,Sans-serif;
}
 
.css-treeview a {
  color: black;
  text-decoration: none;
}
 
.css-treeview a[href]:hover {
  text-decoration: underline;
  text-decoration-style: dotted;
}
 
.css-treeview a+ul {
  margin: 0 0 0 16px;
}

.css-treeview input~ul {
  display: none;
}

.css-treeview input:checked:not(:disabled)~ul	{display: block;}
 
.css-treeview a,
.css-treeview a:before {
  background: url("icons/icons.png") no-repeat;
  display: inline-block;
  height: 16px;
  line-height: 16px;
  vertical-align: middle;
}
 
.css-treeview a {
  background-position: 16px 0;
}
 
.css-treeview a:before {
  content: "";
  width: 24px;
  margin: 0 12px 0 0;
  vertical-align: middle;
  background-position: 0 -48px;
}
.css-treeview input:not(:checked)~a:before {
  background-position:0 -32px;
}
 
.css-treeview input:checked~a:before {
  background-position: 0 -16px;
}