Using Backface-Visibility for CSS Transform

.example1 {
  -webkit-transform: rotateY(180deg);
  -moz-transform: rotateY(180deg);
  -ms-transform: rotateY(180deg);
    
  -webkit-backface-visibility: visible;
  -moz-backface-visibility:    visible;
  -ms-backface-visibility:     visible;
}

.example2 {
  -webkit-backface-visibility: hidden;
  -moz-backface-visibility:    hidden;
  -ms-backface-visibility:     hidden;
}