body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header {
    background-color: #333;
    color: white;
    padding: 20px;
    text-align: center;
}

#product-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
    padding: 20px;
}

.product-card {
    border: 1px solid #ddd;
    border-radius: 5px;
    padding: 20px;
    text-align: center;
    width: 20%;
    margin: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.product-card h2 {
    font-size: 1.2em;
    margin-bottom: 10px;
}

.price {
    font-size: 1.1em;
    font-weight: bold;
    color: #f00;
    margin-bottom: 15px;
}

#order-details {
    margin: 20px auto;
    max-width: 100%;
    padding: 20px;
    text-align: left;
}

h2 {
    margin-bottom: 5px;
}

hr {
    border: 0;
    height: 1px;
    background-color: #ddd;
    margin-bottom: 15px;
}

.payment-option {
    display: flex;
    align-items: center;
    margin: 10px 0;
}

.payment-option input[type="radio"] {
    margin-right: 10px;
}

.order-summary {
    margin-top: 20px;
}

.order-summary h3 {
    margin: 0;
}

.order-summary p {
    margin: 5px 0;
    font-size: 1.1em;
    color: #333;
}

#order-amount {
    color: #f00;
    font-weight: bold;
}

.button-container {
    display: flex;
    justify-content: flex-end; /* 将按钮右对齐 */
    width: 100%;
    margin-top: 20px;
}

.button-container button {
    background-color: #4CAF50;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    margin-top: 20px;
    width: 150px;
}

button {
    background-color: #4CAF50;
    color: white;
    padding: 10px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    width: 40%;
}

button:hover {
    background-color: #45a049;
}

footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 10px;
    position: fixed;
    width: 100%;
    bottom: 0;
}