.spinner {
    width: 30px;
    height: 30px;

    border: 3px solid var(--xlight);
    border-top-color: var(--white);

    border-radius: 50%;

    animation: spin 0.8s linear infinite,
               pulse 1.6s ease-in-out infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

@keyframes pulse {
    0%,100% {
        scale: 1;
    }
    50% {
        scale: .9;
    }
}

.spinner-sm {
    display: inline-block;
    margin-top: 3px;
    width: 16px;
    height: 16px;
    border-width: 2px;
    margin-right: 8px;
}