:root {
    --red: #1e40f5;
    --blue: #66a5e1;
}

@keyframes double_spin_loading {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

.double_spin_loading {
    border: 6px solid transparent;
    border-radius: 100%;
    border-top-color: var(--red);
    border-bottom-color: var(--blue);
    width: 20px;
    height: 20px;
    animation: double_spin_loading 1.5s infinite linear;

    position: relative;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}