.reveal {
  border-radius: 5px;
}

.reveal .close-button {
  position: absolute;
  border-radius: 50%;
  padding: 0 .4rem;
  color: white;
}

.reveal .close-button span {
  color: white;
}

.reveal .close-button span::after {
  position: absolute;
  z-index: -1;
  content: " ";
  height: 2rem;
  width: 2rem;
  top: .3rem;
  right: 0;
  background-color: rgba(0, 0, 0, .7);
  border-radius: 50%;
}

.reveal .close-button span:hover::after {
  background-color: rgba(0, 0, 0, .9);
}