section
{
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 80vh;
    background: #042104;
    animation: animateBg 10s linear infinite;
}
@keyframes animateBg
{
    0%
    {
        filter: hue-rotate(0deg);
    }
    100%
    {
        filter: hue-rotate(360deg);
    }
}
section .loader
{
    position: relative;
    width: 120px;
    height: 120px;
}
section .loader span
{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    transform: rotate(calc(18deg * var(--i)));
}
section .loader span::before
{
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 15px;
    height: 15px;
    border-radius: 60%;
    background: #00ff0a;
    box-shadow: 0 0 10px #00ff0a,
                0 0 20px #00ff0a,
                0 0 40px #00ff0a,
                0 0 60px #00ff0a,
                0 0 80px #00ff0a,
                0 0 100px #00ff0a;
    animation: animate 2s linear infinite;
    animation-delay: calc(0.1s * var(--i));
}
@keyframes animate
{
    0%
    {
        transform: scale(1);
    }
    80%,100%
    {
        transform: scale(0);
    }
}