body { background: #f5f7f6; }
.dezena {
    display: inline-flex; align-items: center; justify-content: center;
    width: 2.1rem; height: 2.1rem; border-radius: 50%;
    background: #e9ecef; color: #212529; font-weight: 600; font-size: .85rem;
    font-variant-numeric: tabular-nums;
}
.dezena-acerto { background: #198754; color: #fff; }
.dezena-resultado { background: #0d6efd; color: #fff; }
.card-auth { max-width: 420px; }