main {
  background: #FFFDF5;
}

.product-item .product-list {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
}
.product-item .product-list li {
  width: calc((100% - 72px) / 3);
  margin: 0;
  margin-bottom: 85px;
}
.product-item .product-list li:not(:nth-child(3n)) {
  margin-right: 36px;
}
@media (max-width: 768px) {
  .product-item .product-list li {
    width: 100%;
    margin-bottom: 0;
  }
  .product-item .product-list li:not(:nth-child(3n)) {
    margin-right: 0px;
  }
  .product-item .product-list li:not(:last-child) {
    margin-bottom: 40px;
  }
}