.product-list div {
    padding: 0 5px;
    position: relative;
}
.product-list div {
    /*width: 25%;*/
    flex: 0 0 25%;
    -ms-flex: 0 0 25%;
}

.product-list div > button {
    display: none;
    position: absolute;
    top: 190px;
    left: 50%;
    z-index: 50;
    transform: translateX(-50%);
}
.product-list div:hover > button {display: block}

.cart-list {
    margin: 62px 0 0 0 ;
    padding: 0;
    border-top: 1px #dee2e6 solid;
}

    .cart-list li {
        border-bottom: 1px #dee2e6 solid;
        padding: .75rem;
        margin: 0;
        list-style: none;
    }

form.form-bordered input[type="text"],
form.form-bordered input[type="password"],
form.form-bordered select,
form.form-bordered textarea {
    border: 1px #000 solid;
}