.modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  z-index: 11;
  width: 48px;
  height: 48px;
  border: 1px solid rgba(255, 255, 255, 0.65);
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.55);
  color: white;
  font-size: 36px;
  line-height: 42px;
  cursor: pointer;
}

.modal-close:hover {
  background: rgba(255, 255, 255, 0.18);
}

.modal-close:focus-visible {
  outline: 3px solid white;
  outline-offset: 4px;
}

.gallery img:focus-visible {
  outline: 3px solid brown;
  outline-offset: 4px;
}