estilos.css

*
{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body
{
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: #000;
}
.circle
{
    position: relative;
    width: 600px;
    height: 600px;
    filter: url(#wavy) blur(1px);
}
.circle:before
{
    content: '';
    position: absolute;
    top: 100px;
    left: 100px;
    right: 100px;
    bottom: 100px;
    border: 20px solid #fff;
    border-radius: 50%;
    box-shadow: 0 0 50px #0f0,
                inset 0 0 50px #0f0;
    -webkit-box-reflect: below 10px linear-gradient(transparent,transparent,#0002);
    animation: animate 5s linear infinite;  
}
.circle::after
{
    content: '';
    position: absolute;
    top: 100px;
    left: 100px;
    right: 100px;
    bottom: 100px;
    border: 20px solid #fff;
    border-radius: 50%;
    box-shadow: 0 0 10px #fff,
                inset 0 0 10px #fff;
}
.circle:nth-child(2):before
{
    animation-delay: -2.5s;
}
@keyframes animate 
{
    0%
    {
        box-shadow: 0 0 50px #0f0,
                    inset 0 0 50px #0f0;
        filter: hue-rotate(0deg);
    }
    20% 
    {
        box-shadow: 0 0 60px #0f0,
                    inset 0 0 60px #0f0;
    }
    40% 
    {
        box-shadow: 0 0 40px #0f0,
                    inset 0 0 40px #0f0;
    }
    60% 
    {
        box-shadow: 0 0 80px #0f0,
                    inset 0 0 80px #0f0;
    }
    80% 
    {
        box-shadow: 0 0 100px #0f0,
                    inset 0 0 100px #0f0;
    }
    100%
    {
        box-shadow: 0 0 50px #0f0,
                    inset 0 0 50px #0f0;
        filter: hue-rotate(360deg);
    }
}
svg
{
    width: 0;
    height: 0;
}