.loader {
    margin:300px;
    width: 60px;
    aspect-ratio: 1;
    display: grid;
}

    .loader::before,
    .loader::after {
        content: "";
        grid-area: 1/1;
        --c: no-repeat radial-gradient(farthest-side,#25b09b 92%,#0000);
        background: var(--c) 50% 0, var(--c) 50% 100%, var(--c) 100% 50%, var(--c) 0 50%;
        background-size: 12px 12px;
        animation: l12 1s infinite;
    }

    .loader::before {
        margin: 4px;
        filter: hue-rotate(45deg);
        background-size: 8px 8px;
        animation-timing-function: linear
    }

@keyframes l12 {
    100% {
        transform: rotate(.5turn)
    }
}