.custom-select {
    appearance: none; 
    -webkit-appearance: none;
    -moz-appearance: none;
    background: url('data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A//www.w3.org/2000/svg%22%20viewBox%3D%220%200%204%205%22%3E%3Cpath%20fill%3D%22%23000%22%20d%3D%22M2%205l2-2H0z%22/%3E%3C/svg%3E') no-repeat left 0.75rem center;
    background-size: 0.65rem auto;
    padding: 10px !important;
}