.spinner-border {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    border: 0.125em solid currentcolor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: spin 0.75s linear infinite;
}

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

.d-none {
    display: none !important;
}