* {
margin: 0;
padding: 0;
}
.parent {
height: 400px;
margin:50px auto;
background-color: #ccc;
}
.son {
width: 300px;
height: 300px;
position: relative;
transform-style: preserve-3d;
transition: all 1s;
margin: 0 auto;
}
.son::after,.son::before {
content: "";
position: absolute;
left: 0;
top: 0;
display: block;
width: 100%;
height: 100%;
background: url(./images/bg.png);
}
.son::before {/*这里将before放在背面*/
background-position: right top;
/*提前将前面的图片旋转到背面*/
transform: rotateY(180deg);
}
.son::after {
background-position: left top;
/*将背面的图片不能看到背面和看到是一样的*/
backface-visibility: visible;
}
.son:hover {
/*此时整个容器旋转180，刚好将之前旋转的180抵消，所以看到的是正面而不是镜像*/
transform: rotateY(180deg);
}
<div class="parent">
<div class="son"></div>
</div>
