.public-submit-spinner {
    width: 1rem;
    height: 1rem;
    display: inline-block;
    border: 2px solid rgba(255, 255, 255, .55);
    border-top-color: #fff;
    border-radius: 50%;
    animation: public-submit-spin .7s linear infinite;
}

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