body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f8f9fa;
}

.checkout-container {
    max-width: 600px;
    margin: 50px auto;
    padding: 20px;
    background: #ffffff;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

h1, h2, h3 {
    text-align: center;
    margin-bottom: 20px;
    color: #333;
}

form label {
    display: block;
    margin: 10px 0 5px;
    font-weight: bold;
}

form input {
    width: 100%;
    padding: 10px;
    margin-bottom: 20px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 16px;
}

.order-summary {
    border-top: 2px solid #e0e0e0;
    padding-top: 20px;
}

.order-items {
    margin-bottom: 20px;
}

.order-item {
    display: flex;
    justify-content: space-between;
    margin: 10px 0;
}

.grand-total {
    text-align: right;
    font-size: 18px;
    font-weight: bold;
    margin-top: 10px;
}

.pay-button {
    width: 100%;
    padding: 15px;
    background-color: #007bff;
    color: white;
    font-size: 18px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.pay-button:hover {
    background-color: #0056b3;
}