.owl-item.active > div:after {
  content: 'active';
}
.owl-item.center > div:after {
  content: 'center';
}
.owl-item.active.center > div:after {
  content: 'active center';
}
.owl-item > div:after {
  font-family: sans-serif;
  font-size: 24px;
  font-weight: bold;
}