<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
@keyframes zhuan {
from{transform: rotateY(0)}
50%{transform: rotateY(180deg) rotateX(40deg)}
100%{transform: rotateY(360deg)}
}
#box{
width: 300px;
height: 300px;
border: 2px solid red;
margin: 100px auto 0;
position: relative;
animation: zhuan 3s linear infinite;
transform-style: preserve-3d;
}
#box>div{
position: absolute;
left: 0;
top: 0;
text-align: center;
line-height: 300px;
font-size: 100px;
width: 100%;
height: 100%;
}
#box>div:nth-child(1){background: lightgreen; transform: translateZ(150px)}
#box>div:nth-child(2){background: lightblue;transform: rotateY(180deg) translateZ(150px)}
#box>div:nth-child(3){background: lightcoral;transform: rotateY(-90deg) translateZ(150px)}
#box>div:nth-child(4){background: lightsalmon;transform: rotateY(90deg) translateZ(150px)}
#box>div:nth-child(5){background: purple;transform: rotateX(90deg) translateZ(150px)}
#box>div:nth-child(6){background: pink;transform: rotateX(90deg) translateZ(-150px)}
</style>
</head>
<body>
<div id="box">
<div>前</div>
<div>后</div>
<div>左</div>
<div>右</div>
<div>上</div>
<div>下</div>
</div>
</body>
</html>
前边的面在z轴上往前移150像素，后边的面直接在z轴上往后移动150像素的话字是反的，所以要先在Y轴上旋转180度，在往后移动（顺序是先旋转再移动）
左边的面在Y轴上旋转-90度，z轴上往前移动150像素，右边和左边相反，右边在Y轴上旋转90度
上边的面在x轴上旋转90像素，z轴上往前移动150像素，下边的面和上边的相反，在z轴上往后移动-150像素