.spinner {
    width: 1em;
    height: 1em;
    border: 2px solid;
    border-color: #4b5563 #4b5563 #4b5563 transparent;
    border-radius: 50%;
    animation: spin 2s linear infinite;
    display: inline-block;
    margin: 0 auto;
}

:is(.dark .spinner) {
    border-color: #d1d5db #d1d5db #d1d5db transparent;
}

.spinner-white {
    border-color: #ffffff #ffffff #ffffff transparent;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}