body {
    font-family: Arial, sans-serif;
    background-color: #f9f9f9;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

.header {
    text-align: center;
    margin-bottom: 20px;
    position: relative;
    height: 150px;
    background: url('your-background-image-url.jpg') no-repeat center center/cover;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.header::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 0;
}

.header p {
    color: #4CAF50;
    position: relative;
    z-index: 1;
}

.header h1 {
    color: #FFC107;
    position: relative;
    z-index: 1;
    margin: 0;
}

.cart-content {
    display: flex;
    justify-content: space-between;
    padding: 20px;
    margin-top: 20px;
}

.left-section {
    width: 60%;
    padding-right: 20px;
}

.cart-item {
    display: flex;
    background-color: #f0fff0;
    padding: 20px;
    border: 1px solid #4CAF50;
    border-radius: 5px;
    align-items: center;
    margin-bottom: 20px;
}

.cart-item img {
    width: 150px;
    height: 150px;
    margin-right: 20px;
    border-radius: 5px;
    object-fit: cover;
}

.item-details {
    display: flex;
    flex-direction: column;
}

.item-details h2 {
    color: #4CAF50;
    margin: 0 0 10px;
}

.item-details p {
    margin: 5px 0;
}

#remove-btn {
    color: red;
    background: none;
    border: none;
    cursor: pointer;
    align-self: flex-start;
}

.right-section {
    width: 40%;
    padding-left: 20px;
}

.payment-details {
    padding: 20px;
    background-color: #f0fff0;
    border: 1px solid #4CAF50;
    border-radius: 5px;
}

.payment-details h3 {
    color: #4CAF50;
    margin-bottom: 10px;
}

.payment-details p {
    margin: 10px 0;
}

.reward-points {
    display: flex;
    align-items: center;
    margin: 10px 0;
}

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

.coupon input {
    padding: 10px;
    margin-right: 10px;
    border: 1px solid #4CAF50;
    border-radius: 5px;
}

.coupon button {
    background-color: #4CAF50;
    color: white;
    border: none;
    padding: 10px 20px;
    cursor: pointer;
    border-radius: 5px;
}

.payment-btn {
    background-color: #4CAF50;
    color: white;
    border: none;
    padding: 15px 20px;
    width: 100%;
    cursor: pointer;
    border-radius: 5px;
}

/* Responsive Styles */
@media (max-width: 1400px) {
    .container {
        width: 100%;
        padding: 0 20px;
    }
}

@media (max-width: 1024px) {
    .cart-content {
        flex-direction: column;
    }

    .left-section, .right-section {
        width: 100%;
        padding: 0;
    }

    .left-section {
        padding-bottom: 20px;
    }
}

@media (max-width: 768px) {
    .header {
        height: 100px;
    }

    .header h1 {
        font-size: 24px;
    }

    .cart-item img {
        width: 100px;
        height: 100px;
    }

    .item-details h2 {
        font-size: 18px;
    }

    .item-details p {
        font-size: 14px;
    }

    .coupon input {
        padding: 5px;
    }

    .coupon button {
        padding: 5px 10px;
    }

    .payment-btn {
        padding: 10px 15px;
    }
}

@media (max-width: 480px) {
    .header p {
        font-size: 12px;
    }

    .header h1 {
        font-size: 20px;
    }

    .cart-item {
        flex-direction: column;
        align-items: flex-start;
    }

    .cart-item img {
        margin-bottom: 10px;
    }

    .item-details {
        align-items: flex-start;
    }

    .coupon {
        flex-direction: column;
    }

    .coupon input {
        margin-bottom: 10px;
    }
}