<div class="rect-wrap">   <!--舞台元素，设置perspective，让其子元素获得透视效果。-->
<div class="container">   <!-- 容器，设置transform-style: preserve-3d，让其子元素在3D空间呈现-->
<div class="top slide"></div>   <!--立方体的六个面-->
<div class="bottom slide"></div>
<div class="left slide"></div>
<div class="right slide"></div>
<div class="front slide"></div>
<div class="back slide"></div>
</div>
</div>

<style type="text/css">
.rect-wrap {
position: relative;
perspective: 1600px;
}
.container {
width: 800px;
height: 800px;
transform-style: preserve-3d;
transform-origin: 50% 50% 200px;    /*设置3d空间的原点在平面中心再向Z轴移动200px的位置*/
}
.slide {
width: 400px;
height: 400px;
position: absolute;  //定位
}
.top {
left: 200px;
top: -200px;
transform: rotateX(-90deg);
transform-origin: bottom;
background-color:#C69
}
.bottom {
left: 200px;
bottom: -200px;
transform: rotateX(90deg);
transform-origin: top;
background-color:#6FF
}
.left {
left: -200px;
top: 200px;
transform: rotateY(90deg);
transform-origin: right;
background-color:#9F0
}
.right {
left: 600px;
top: 200px;
transform: rotateY(-90deg);
transform-origin: left;
background-color:#33F
}
.front {
left: 200px;
top: 200px;
transform: translateZ(400px);
background-color:#366  /*立方体前面正对着屏幕，所以不用旋转，只需向Z轴前移动距离*/
}
.back {
left: 200px;
top: 200px;
transform: translateZ(0);
background-color:#09F   /*立方体后面正对着屏幕，所以不用旋转，只需向Z轴后移动距离*/
}
@keyframes rotate-frame {
0% {
transform: rotateX(0deg) rotateY(0deg);
}
10% {
transform: rotateX(0deg) rotateY(180deg);
}
20% {
transform: rotateX(-180deg) rotateY(180deg);
}
30% {
transform: rotateX(-360deg) rotateY(180deg);
}
40% {
transform: rotateX(-360deg) rotateY(360deg);
}
50% {
transform: rotateX(-180deg) rotateY(360deg);
}
60% {
transform: rotateX(90deg) rotateY(180deg);
}
70% {
transform: rotateX(0) rotateY(180deg);
}
80% {
transform: rotateX(90deg) rotateY(90deg);
}
90% {
transform: rotateX(90deg) rotateY(0);
}
100% {
transform: rotateX(0) rotateY(0);
}
}
.container{
animation: rotate-frame 30s linear infinite;
}
</style>