<style>
        /*最外层容器样式*/
        .wrap {
            width: 100px;
            height: 100px;
            margin: 150px;
            position: relative;
        }
 
        /*包裹所有容器样式*/
        .cube {
            width: 50px;
            height: 50px;
            margin: 0 auto;
            transform-style: preserve-3d;
            transform: rotateX(-30deg) rotateY(-80deg);
            animation: rotate linear 20s infinite;
        }
 
        @-webkit-keyframes rotate {
            from {
                transform: rotateX(0deg) rotateY(0deg);
            }
            to {
                transform: rotateX(360deg) rotateY(360deg);
            }
        }
 
        .cube div {
            position: absolute;
            width: 200px;
            height: 200px;
            opacity: 0.8;
            transition: all .4s;
        }
 
        /*定义所有图片样式*/
        .pic {
            width: 200px;
            height: 200px;
        }
 
        .cube .out_front {
            transform: rotateY(0deg) translateZ(100px);
        }
 
        .cube .out_back {
            transform: translateZ(-100px) rotateY(180deg);
        }
 
        .cube .out_left {
            transform: rotateY(-90deg) translateZ(100px);
        }
 
        .cube .out_right {
            transform: rotateY(90deg) translateZ(100px);
        }
 
        .cube .out_top {
            transform: rotateX(90deg) translateZ(100px);
        }
 
        .cube .out_bottom {
            transform: rotateX(-90deg) translateZ(100px);
        }
 
        /*定义小正方体样式*/
        .cube span {
            display: block;
            width: 100px;
            height: 100px;
            position: absolute;
            top: 50px;
            left: 50px;
        }
 
        .cube .in_pic {
            width: 100px;
            height: 100px;
        }
 
        .cube .in_front {
            transform: rotateY(0deg) translateZ(50px);
        }
 
        .cube .in_back {
            transform: translateZ(-50px) rotateY(180deg);
        }
 
        .cube .in_left {
            transform: rotateY(-90deg) translateZ(50px);
        }
 
        .cube .in_right {
            transform: rotateY(90deg) translateZ(50px);
        }
 
        .cube .in_top {
            transform: rotateX(90deg) translateZ(50px);
        }
 
        .cube .in_bottom {
            transform: rotateX(-90deg) translateZ(50px);
        }
 
        /*鼠标移入后样式*/
        .cube:hover .out_front {
            transform: rotateY(0deg) translateZ(200px);
        }
 
        .cube:hover .out_back {
            transform: translateZ(-200px) rotateY(180deg);
        }
 
        .cube:hover .out_left {
            transform: rotateY(-90deg) translateZ(200px);
        }
 
        .cube:hover .out_right {
            transform: rotateY(90deg) translateZ(200px);
        }
 
        .cube:hover .out_top {
            transform: rotateX(90deg) translateZ(200px);
        }
 
        .cube:hover .out_bottom {
            transform: rotateX(-90deg) translateZ(200px);
        }
    </style>


    <!-- 外层最大容器 -->
    <div class="wrap">
        <!--包裹所有元素的容器-->
        <div class="cube">
            <!--前面图片 -->
            <div class="out_front">
                <img src="https://i.loli.net/2018/05/03/5aeb0eef73838.jpg" class="pic">
            </div>
            <!--后面图片 -->
            <div class="out_back">
                <img src="https://i.loli.net/2018/05/03/5aeb0f2fb9a83.jpg" class="pic">
            </div>
            <!--左面图片 -->
            <div class="out_left">
                <img src="https://i.loli.net/2018/05/03/5aeb0f55411f0.jpg" class="pic">
            </div>
            <!--右面图片 -->
            <div class="out_right">
                <img src="https://i.loli.net/2018/05/03/5aeb0f79a1124.jpg" class="pic">
            </div>
            <!--上面图片 -->
            <div class="out_top">
                <img src="https://i.loli.net/2018/05/03/5aeb0f98a8b66.jpg" class="pic">
            </div>
            <!--下面图片 -->
            <div class="out_bottom">
                <img src="https://i.loli.net/2018/05/03/5aeb0fdd51b7e.jpg" class="pic">
            </div>
 
            <!--小正方体 -->
            <span class="in_front">
                <img src="https://i.loli.net/2018/05/03/5aeb100223dd0.jpg" class="in_pic">
            </span>
            <span class="in_back">
                 <img src="https://i.loli.net/2018/05/03/5aeb101c2c24b.jpg" class="in_pic">
            </span>
            <span class="in_left">
                <img src="https://i.loli.net/2018/05/03/5aeb1038127b5.jpg" class="in_pic">
            </span>
            <span class="in_right">
                <img src="https://i.loli.net/2018/05/03/5aeb0dce1ca55.jpg" class="in_pic">
            </span>
            <span class="in_top">
                <img src="https://i.loli.net/2018/05/03/5aeb1057bb167.jpg" class="in_pic">
            </span>
            <span class="in_bottom">
                <img src="https://i.loli.net/2018/05/03/5aeb107514579.jpg" class="in_pic">
            </span>
        </div>
 
    </div>