.spinner {
    --size: 30px;
    --first-block-clr: oklch(65.6% 0.241 354.308);
    --second-block-clr: oklch(55.8% 0.288 302.321);
    --clr: #111;
    
    width: 100px;
    height: 100px;
    position: relative;
}

.spinner::after,
.spinner::before {
    box-sizing: border-box;
    position: absolute;
    content: "";
    width: var(--size);
    height: var(--size);
    top: 50%;
    animation: up 2.4s cubic-bezier(0, 0, 0.24, 1.21) infinite;
    left: 50%;
    background: var(--first-block-clr);
    box-shadow: 0 0 1rem rgba(0, 0, 0, .5);
}

.spinner::after {
    background: var(--second-block-clr);
    top: calc(50% - var(--size));
    left: calc(50% - var(--size));
    animation: down 2.4s cubic-bezier(0, 0, 0.24, 1.21) infinite;
}

@keyframes down {

    0%,
    100% {
        transform: none;
    }

    25% {
        transform: translateX(100%);
    }

    50% {
        transform: translateX(100%) translateY(100%);
    }

    75% {
        transform: translateY(100%);
    }
}

@keyframes up {

    0%,
    100% {
        transform: none;
    }

    25% {
        transform: translateX(-100%);
    }

    50% {
        transform: translateX(-100%) translateY(-100%);
    }

    75% {
        transform: translateY(-100%);
    }
}