.spinner {
    width: 1.5em;
    height: 1.5em;
    border: 0.3em solid rgba(0, 0, 0, 0.1);
    /*border-left-color: orange;*/
    border-radius: 50%;
    animation: spin 0.9s linear infinite;
}

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