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body { perspective: 500px;}.box { width: 200px; height: 200px; margin: 100px auto; position: relative; transition: all 2s; /* 给父盒子增加transform-style属性preserve-3d，让子元素放弃3d平面成果 */ transform-style: preserve-3d;}.box:hover { transform: rotateY(60deg);}.box>div { position: absolute; left: 0; top: 0; width: 100%; height: 100%; background-color: pink;}.box>div:last-child { background-color: blue; transform: rotateX(45deg); transition: all 1s;}</style>
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