body {
    font-family: Arial, sans-serif;
    text-align: center;
    margin: 0;
    padding: 0;
}

h1 {
    background-color: #333;
    color: white;
    padding: 15px;
}

#products-container, #cart {
    margin: 20px;
    padding: 20px;
    border: 1px solid #ccc;
    display: inline-block;
    vertical-align: top;
    background-color: #f9f9f9;
}

#products-container {
    width: 50%;
}

#cart {
    width: 40%;
}

button {
    padding: 10px;
    margin-top: 5px;
    background-color: #28a745;
    color: white;
    border: none;
    cursor: pointer;
}

button:hover {
    background-color: #218838;
}

input {
    padding: 5px;
    width: 150px;
}

#promo-message {
    color: red;
    font-weight: bold;
}

/* Styling for product images */
.product img {
    width: 100px;
    height: auto;
    display: block;
    margin: 0 auto 10px;
}

.product {
    border: 1px solid #ddd;
    padding: 10px;
    margin: 10px;
    display: inline-block;
    width: 200px;
    background: white;
}

#cart-items li {
    list-style: none;
    padding: 5px 0;
}