.accordion {
  width: 100%;
  margin: 20px auto;
}
.accordion .head1,
.head2,
.head3,
.head4,
.head1-f,
.head2-f,
.head3-f {
  cursor: pointer;
  display: block;
}
.accordion .head2,
.head3,
.head4 {
}
.accordion .head1,
.head1-f {
  padding: 5px;
  border-top: 1px solid #bbb;
  border-bottom: 1px solid #bbb;
  /* font-size: 1.5rem; */
  font-weight: normal;
  color: #333;
}
.accordion .head1:hover,
.accordion .head1-f:hover {
  color: #333;
}

.accordion .head1:not(:last-of-type) {
  border-bottom: 1px dotted #555;
}
.accordion div,
.accordion p {
  display: none;
}
.accordion .head2,
.accordion .head2-f {
  padding: 5px;
  border-top: 1px solid #bfbfbf;
  /* font-size: 1.1rem; */
  color: #333;
  padding-left: 8px;
}
.accordion .head2:hover,
.accordion .head2-f:hover {
  background-color: #afafaf;
}
.accordion .head3,
.accordion .head3-f {
  padding: 5px;
  border-top: 1px solid #cbcbcb;
  /* font-size: 0.9rem; */
  color: #333;
  padding-left: 11px;
}
.accordion .head3:hover,
.accordion .head3-f:hover {
  background-color: #cfcfcf;
}
.accordion .head4 {
  padding: 5px;
  border-top: 1px solid #cbcbcb;
  color: #444;
  padding-left: 14px;
}
.accordion .head4:hover {
  background-color: #eee;
}
.accordion p {
  padding: 15px 35px;
  background-color: #ddd;
  font-size: 0.8rem;
  color: #333;
  line-height: 1.3rem;
}

.rotate-caret.rotated:before {
  transform: rotate(-90deg);
}