.cart-subtitle{
    text-align:center;
    color:#666;
    margin-bottom:40px;
    font-size:18px;
}

.summary-row{
    display:flex;
    justify-content:space-between;
    margin:15px 0;
    font-size:18px;
}

.summary-row.total{
    margin-top:25px;
    padding-top:20px;
    border-top:1px solid #ddd;
    font-size:24px;
    font-weight:bold;
}

@media (max-width: 768px) {

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

    .cart-product img {
        width: 100%;
        max-width: 250px;
        height: auto;
    }

    .cart-summary {
        margin-top: 25px;
    }

    .checkout-btn {
        width: 100%;
    }
}