css立体盒子拉伸问题

初学css做立体盒子模型,盒子旋转过程中被拉伸,最后又回到了一个平面(覆盖其他边框颜色)

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .box {
            width: 300px;
            height: 300px;
            margin:200px auto;
            /* background-color: pink; */
            position: relative;
            transform-style: preserve-3d;
            transform: rotateX(45deg) rotateY(45deg);
            /* perspective: 1000px; */
            transition: all 1s;
        }
        .box .z:nth-child(1) {
            width: 300px;
            height: 300px;
            position: absolute;
            background-color: blue;
            transform: rotateY(180deg) translatez(150px);
        }
        .box .z:nth-child(2) {
            width: 300px;
            height: 300px;
            position: absolute;
            background-color: green;
            transform: rotateY(0) translateZ(150px);
        }
        .box .z:nth-child(3) {
            width: 300px;
            height: 300px;
            position: absolute;
            background-color: yellow;
            transform: rotateX(90deg) translateZ(150px);
        }
        .box .z:nth-child(4) {
            width: 300px;
            height: 300px;
            position: absolute;
            background-color: black;
            transform: rotateX(-90deg) translateZ(150px);
        }
        .box .z:nth-child(5) {
            width: 300px;
            height: 300px;
            position: absolute;
            background-color: deepskyblue;
            transform: rotateY(90deg) translateZ(150px);
        }
        .box .z:nth-child(6) {
            width: 300px;
            height: 300px;
            position: absolute;
            background-color: cornflowerblue;
            transform: rotateY(-90deg) translateZ(150px);
        }
        .box:hover {
            transform: rotatey(180deg);
        }
    </style>
</head>
<body>
    <div class="box">
        <div class="z">1</div>
        <div class="z">2</div>
        <div class="z">3</div>
        <div class="z">4</div>
        <div class="z">5</div>
        <div class="z">6</div>
    </div>

    
</body>
</html>