body {
    background-color: #f8f9fa;
}

.card {
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.receipt-container {
    max-width: 600px;
    margin: 0 auto;
    background: white;
    padding: 2rem;
    border: 1px solid #dee2e6;
}

.receipt-container table {
    width: 100%;
}

.btn-qb {
    background-color: #2ca01c;
    border-color: #2ca01c;
    color: white;
}

.btn-qb:hover {
    background-color: #248a17;
    border-color: #248a17;
    color: white;
}