* {
    margin: 0;
    padding: 0;
}
body {
    background: #282828;
    text-align: center;
}
li {
    list-style: none;
}
.container {
    width:  400px;
    height: 400px;
    margin: 100px auto;
    perspective: 1000px;/* 景深 */
}
.container .photo {
    position: relative;
    transform-style: preserve-3d;/* 3d效果 */
    transition: all .5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    width: 100%;
    height: 100%;
}
.container .photo li{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}
.container .photo li img{
    width: 100%;
    height: 100%;
    border: 3px solid white;
}
/* 刚开始时转一下，好看点 */
.container .init {
    transform: translateZ(-200px) rotateX(-16deg) rotateY(15deg);
}
/* 摆成一个正方体 */
.container .photo li:nth-child(1) img {
    transform: translateZ(200px);
}
.container .photo li:nth-child(2) img {
    transform: rotateX(180deg)  translateZ(200px);
}
.container .photo li:nth-child(3) img {
    transform: rotateY(90deg) translateZ(200px);
}
.container .photo li:nth-child(4) img {
    transform: rotateY(-90deg) translateZ(200px);
}
.container .photo li:nth-child(5) img {
    transform: rotateX(90deg) translateZ(200px);
}
.container .photo li:nth-child(6) img {
    transform: rotateX(-90deg) translateZ(200px);
}

/* 魔方结束 */
h2 {
    color: white;
    margin-bottom: 50px;
}
/* 小图片 */
.minis {
    display: grid;
    /* 栅格排列 */
    grid-template-columns: 105px 105px 105px;
    /* 每行几个宽度分别多少 */
    grid-template-rows: 85px 85px;
    /* 每列几个高度多少 */
    justify-content: center;
    /* 居中 */
    grid-gap: 15px;
    /* 间距 */
}
.minis input {
    outline: none;
    border: 2px solid white;
    width: 100%;
    height: 100%;
}
/* 图片点击图片边框发生变化 */
.minis input:focus {
    border: 2px solid orange;
}
/* js 使用的魔方变化样式*/
.container .img_1 {
    transform: translateZ(-200px);
}
.container .img_2 {
    transform: translateZ(-200px) rotateX(-180deg) ;
}
.container .img_3 {
    transform: translateZ(-200px) rotateY(-90deg) ;
}
.container .img_4 {
    transform: translateZ(-200px) rotateY(90deg) ;
}
.container .img_5 {
    transform: translateZ(-200px) rotateX(-90deg) ;
}
.container .img_6 {
    transform: translateZ(-200px) rotateX(90deg) ;
}

js

window.onload = function() {
    var minis = document.querySelector('.minis');
    var bigphoto = document.querySelector('.photo');
    var currList = bigphoto.classList;//获取bigphoto下的类名
    var inputs = minis.querySelectorAll('input');
    //动态的给下方小图片添加id
    for(var i = 0;i < inputs.length; i++){
        inputs[i].id = 'img_' + (i + 1);
    }
    var target = currList[1];
    minis.onclick = function(e) {
        var flage = e.target.id;//我的id名和样式名相同，这样方便一些
        currList.replace(target,flage);//用flage替换target
        target = flage;//给target新的值，供下次使用
    }
}