, , -. Y , :

, filp:
- Y
- , .back div. , div "" . , .
- ,
CSS- - :
.card {
position: relative;
width: 9rem; height: 12rem;
perspective: 30rem;
}
.front, .back {
position: absolute;
width: 100%; height: 100%;
transition: transform 1s;
backface-visibility:hidden;
}
.front {
background-color: #66ccff;
}
.back {
background-color: #dd8800;
transform: rotateY(180deg);
}
.card:hover .front{ transform: rotateY(180deg); }
.card:hover .back { transform: rotateY(360deg); }
<div class="card">
<div class="front"><span>Front</span></div>
<div class="back"><span>Back</span></div>
</div>
Hide result, , . . CanIuse 3d- transitions.