/*
 * From: https://cssloaders.github.io/
 */
 .spinner {
    display: inline-block;
    width: 2em;
    height: 2em;
    border: 0.25em solid #FFF;
    border-bottom-color: transparent;
    border-radius: 50%;
    box-sizing: border-box;
    animation: spinner-rotation 1s linear infinite;
    z-index: var(--z-index-above);
}

@keyframes spinner-rotation {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}