Sindbad~EG File Manager

/* Hide the first dropdown-divider if no filter option element is listed before it.
   This can happen for some subset configurations of the block_myoverview course filter. */
.block_myoverview button#groupingdropdown + .dropdown-menu li:first-of-type.dropdown-divider:first-of-type {
    display: none;
}
.block_myoverview .whitebutton .btn-secondary {
    background: white;
    border-color: var(--primary);
    color: var(--primary);
}