*{
    margin: 0;                                      /*1*/
    padding: 0;                                     /*2*/
    box-sizing: border-box;                         /*3*/
}

body{
    display: flex;                                  /*4*/
    justify-content: center;                        /*5*/
    align-items: center;                            /*6*/
    min-height: 100vh;                              /*7*/
    background: #000;                             /*8*/
    transform-style: preserve-3d;       
}

.box{
    position: relative;                             /*9*/
    width: 200px;                                   /*10*/
    height: 200px;                                  /*11*/
    transform-style: preserve-3d;                   /*12*/
    transition: 1.5s;
    transform: perspective(1000px) rotateY(0deg);
    /* animation: animate 20s linear infinite; */
}

@keyframes animate {
    0%
    {
        transform: perspective(1000px) rotateY(0deg);
    }
    100%
    {
        transform: perspective(1000px) rotateY(360deg);
    }
}

.box span{
    position: absolute;                             /*13*/
    top: 0;                                         /*14*/
    left: 0;                                        /*15*/
    width: 100%;                                    /*16*/
    height: 100%;                                   /*17*/
    transform-origin: center;                       /*18*/
    transform-style: preserve-3d;                   /*19*/
    transform: rotateY(calc(var(--i) * 45deg)) translateZ(400px);                     /*20*/
    -webkit-box-reflect: below 0px linear-gradient(transparent,transparent,#0004);  /*27*/
}

.box span img{
    position: absolute;                 /*21*/
    top: 0;                             /*22*/
    left: 0;                            /*23*/
    width: 100%;                        /*24*/
    height: 100%;                       /*25*/
    /* object-fit: cover; */
    object-fit: fill;                   /*26*/
    user-select: none;
    cursor: pointer;
    border: 2px solid yellow;
}

.btns{
    position: absolute;
    bottom: 100px;
    display: flex;
    gap: 30px;
}

.btns .btn{
    position: relative;
    width: 60px;
    height: 60px;
    border: 2px solid #fff;
    border-radius: 50%; 
    display: flex;   
    justify-content: center;
    align-items: center;
    cursor: pointer;
}

.btns .btn:active{
    background: #fff;
}

.btns .btn::before
{
    content: '';
    position: absolute;
    width: 15px;
    height: 15px;
    border-top: 3px solid #fff;
    border-right: 3px solid #fff;
    transform: rotate(45deg) translate(-2.5px,2.5px);
}

.btns .btn.prev::before{
    transform: rotate(225deg) translate(-2.5px,2.5px);
}

.btns .btn:active::before{
    border-top: 3px solid #000;
    border-right: 3px solid #000;
}