.ac-container {
  border: 1px solid #ccc;
  border-top: none;
}
.ac-container label {
  height: 20px;
  line-height: 0.8;
  font-size: 20px;
  padding: 5px;
  display: block;
  cursor: pointer;
  color: #666;
  background: #eee;
  border-top: 1px solid #ccc;
}
.ac-container input {
  display: none;
}
.ac-container article {
  overflow: hidden;
  height: 0;
  transition: 0.6s;
}
.ac-container input:checked ~ article {
  overflow: scroll;
  height: 200px;
  border-top: 1px solid #ccc;
}