.collapsible {
  background-color: #79aec8;
  color: #fff;
  cursor: pointer;
  padding: 18px;
  width: 100%;
  border: none;
  text-align: center;
  outline: none;
  font-size: 15px;
}

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

/* Style the collapsible content. Note: hidden by default */
.hidden-content {
  padding: 0 18px;
  display: none;
  overflow: hidden;
  background-color: #f1f1f1;
  clear: both;
}