*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body{
    background: linear-gradient(to right,#2c5364,#0f2027);
    background: linear-gradient(45deg, #0a0a0a, #3a4452);
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.slider{
    position: relative;
    /* when it added to program */
    /* margin-left: 40%;
    margin-top: 10%; */
    /* background: linear-gradient(to right,#2c5364,#0f2027); */
    width:200px;
    height:200px;
    transform-style: preserve-3d;
    animation: rotate 30s linear infinite;

}
@keyframes rotate{
    0%{
        transform: perspective(1000px) rotateY(0deg);
    }
    100%{
        transform: perspective(1000px) rotateY(360deg);
    }
}
.slider span {
    position: absolute;
    top:0;
    left: 0;
    width: 100%;
    height: 100%;
    transform-origin: center;
    transform-style: preserve-3d;
    transform: rotateY(calc(var(--i)*45deg)) translateZ(350px);
}
.slider span img{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 10px;
    object-fit: cover;
    transition: 2s;
    box-shadow:  1px 3px 15px rgba(113, 115, 119, 0.5);
    
}
.slider span:hover img{
  transform: translateY(-50px) scale(1.2);
  
}