/* Page center */
body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background: #111;
}

/* Banner container */
.banner {
    width: 300px;
    height: 300px;
    perspective: 1000px;
}

/* Slider */
.slider {
    position: relative;
    width: 100%;
    height: 100%;
    transform-style: preserve-3d;
    animation: rotate 20s linear infinite;
}

/* Individual image holders */
.slider span {
    position: absolute;
    width: 100%;
    height: 100%;
    transform: rotateY(calc(var(--i) * 60deg)) translateZ(400px);
}

/* Images */
.slider span img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 10px;
}

/* Rotation animation */
@keyframes rotate {
    from {
        transform: rotateY(0deg);
    }
    to {
        transform: rotateY(360deg);
    }
}