.vendor-group {
    margin-bottom: 20px;
    border-bottom: 1px solid #ddd;
    padding-bottom: 10px;
}
.vendor-group h3 {
    font-size: 1.5em;
    margin: 0 0 10px;
}
.packing-category-group {
    margin-left: 20px;
    margin-bottom: 15px;
}
.packing-category-group h4 {
    font-size: 1.2em;
    margin: 0 0 5px;
}
.cart-items, .checkout-items {
    list-style: none;
    padding: 0;
    margin: 0;
}
.cart-items td, .checkout-items li {
    padding: 5px 0;
}