.collapsible {

  color: Black;
  cursor: pointer;
  padding: 10px;
  border: none;
  border-radius: 12px;
  text-align: center;
  outline: none;
  font-size: 15px;
  background-color: #888;
}

.active, .collapsible:hover {
  background-color: #555;
}

.content {
  padding: 0 18px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.2s ease-out;

}