.allcover{position:absolute;top:0;right:0}.ctt{left:50%;transform:translate(-50%,-50%)}.ctt,.tb{position:absolute;top:50%}.tb{transform:translateY(-50%)}.lr{position:absolute;left:50%;transform:translateX(-50%)}.preserve{perspective:1000;-webkit-backface-visibility:hidden;backface-visibility:hidden;transform-style:preserve-3d}@-webkit-keyframes trover{0%{transform:scale(1)}to{transform:scale(1.05)}}@keyframes trover{0%{transform:scale(1)}to{transform:scale(1.05)}}#test{width:100vw;height:100vh}