.clearfix {
  &::before,
  &::after {
    content: '';
    display: table;
  }

  &::after {
    clear: both;
  }

  *zoom: 1;
}

.cover {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.circle {
  border-radius: 50%;
}

.full-height {
  height: 100%;
}

.pointer {
  cursor: pointer;
}