@media screen and (min-width: 768px) {
  .product_pageContents .howto_top .howto_box {
    margin-bottom: 0;
  }
}
.product_pageContents .howto_top .howto_box .howto_use {
  padding-top: 0;
}
@media screen and (max-width: 767px) {
  .product_pageContents .howto_top .howto_box .howto_use {
    margin-top: 0;
  }
}
.product_pageContents .howto_top .howto_box .ouyou {
  margin-top: 0;
}
.product_pageContents .seibun_top .seibun_box table tr.bb-double {
  border-top: 3px double #000 !important;
}