@charset "UTF-8";
body {
  margin: 0 0;
}

.usagi {
    color: #fff;
    display: block;
    text-decoration: none;
    width: 200px;
    position: relative;
    perspective: 300px;
    -webkit-perspective: 300px;
}
 
.usagi span {
    text-align: center;
    display: block;
    width: 200px;
    padding: 30px 0;
    position:absolute;
    top: 0;
    margin-top: -30px;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    transition: 0.8s;
}
.usagi .back {
    transform:rotateY(180deg);
    -webkit-transform:rotateY(180deg);
}
 
.usagi:hover .front {
    transform:rotateY(180deg);
    -webkit-transform:rotateY(180deg);
}
 
.usagi:hover .back {
    transform:rotateY(360deg);
    -webkit-transform:rotateY(360deg);
}