.product_detail_area select{
	-webkit-appearance: none;
}
.product_detail_area select {
  margin: 10px auto 0;
  background: #eee;
  text-align: center;
  border-radius:3px;
  border: 0;
  color: #222;
  width: 100%;
  padding: 10px 1em !important;
  font-size: 14px;
  position: relative;
}
.product_detail_area select {
  background-image: url(https://file003.shop-pro.jp/PA01459/242/images/common/select-arrow.svg);
  background-position: right 10px center;
  background-repeat: no-repeat;
  background-size: 16px 16px;
}