.detail-pc {
    max-width:200px;
}
.detail-sp {
    max-width: 55%;
}
.cart-pc {
    display:flex;
    justify-content:space-between;
}
.cart-pc-img {
    max-width: 250px;
    margin-top:30px;
}
.cart-sp {
    max-width: 55%;
}
.pay-pc {
    max-width: 100%;
}
.pay-sp {
    max-width: 100%;
}

.pay-pc-div {
    display: flex;
    justify-content:space-between;
}