.unir_form_submit.is-loading {
    opacity: .75;
    cursor: wait;
}

.unir_form_submit .unir-form-spinner {
    display: inline-block;
    width: 1.4rem;
    height: 1.4rem;
    margin-left: .8rem;
    vertical-align: -.2rem;
    border: .2rem solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: unir-form-spin .8s linear infinite;
}

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

@media (prefers-reduced-motion: reduce) {
    .unir_form_submit .unir-form-spinner {
        animation-duration: 3s;
    }
}