.products-buy {
    border: 1px solid #666666;
    margin-bottom: 2em;
}

.products-buy .join_list li {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
}

.products-buy .product-name {
  flex: 1 1 60%;
}

.products-buy input {
  flex: 1 1 160px;
}