ul, #myUL {
  list-style-type: none;
}
ul, #myUL2 {
  list-style-type: none;
}
#myUL,#myUL2{
    list-style-type: none;
    padding: 20px;
    background: #24a1af;
    color: #fff;
    border: 3px solid #6ecad5;
}
.caret {
  cursor: pointer;
  -webkit-user-select: none; /* Safari 3.1+ */
  -moz-user-select: none; /* Firefox 2+ */
  -ms-user-select: none; /* IE 10+ */
  user-select: none;
}

.caret::before {
  content: "\25B6";
  color: #ffff;
  display: inline-block;
  margin-right: 6px;
}

.caret-down::before {
  -ms-transform: rotate(90deg); /* IE 9 */
  -webkit-transform: rotate(90deg); /* Safari */'
  transform: rotate(90deg);  
}

.nested {
  display: none;
}

.active {
  display: block;
}