* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background: #000;
    overflow: hidden;
}

.container {
    position: absolute;
    top: 20%;
    height: 90%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.circle {
    position: absolute;
    background: transparent;
    width: calc(var(--i) * 2.5vmin);
    aspect-ratio: 1;
    border-radius: 50%;
    border: 3px solid rgb(0, 255, 13);
    transform-style: preserve-3d;
    transform: rotateX(70deg) translateZ(50px);
    animation: animate 3s ease-in-out calc(var(--i) * 0.08s) infinite;
    box-shadow: 0 0 15px rgb(124, 124, 124), inset 0 0 15px rgb(124, 124, 124);
}

@keyframes animate {
    0%, 100% {
        transform: rotateX(70deg) translateZ(50px) translateY(0);
        filter: hue-rotate(0);
    }
    50% {
        transform: rotateX(70deg) translateZ(50px) translateY(-50vmin);
    }
}