.top_bg {
  background: url(../images/product_yd/product_yd_bg.jpg);
  width: 100%;
  height: 300px;
  background-size: cover;
  background-repeat: no-repeat;
  display: flex;
}

.top_bg .box {
  margin: auto;
  text-align: center;
  line-height: 56px;
}

.top_bg .box .name {
  font-weight: bold;
  color: #FFFFFF;
  font-size: 200%;
}

.top_bg .box .desc {
  color: #FFFFFF;
  font-size: 100%;
}

/*  */

.section1 {
  background: #FFFFFF;
  margin: 0 auto;
}

.box_section .box {
  width: 50%;
  margin: 0 auto;
  text-align: center;
  padding: 40px 0;
}

.box_section .box div:nth-child(1) {
  color: #414141;
  font-size: 140%;
  font-weight: bold;
}

.box_section .box div:nth-child(3) {
  color: #747474;
  font-size: 100%;
  padding: 15px 0;
}

.box_section .box .border {
  background: #E5E5E5;
  width: 40%;
  height: 1px;
  position: relative;
  margin: 0 auto;
  margin-top: 10px;
}

.box_section .box .border::after {
  position: absolute;
  content: '';
  background: #B70081;
  width: 20%;
  height: 4px;
  margin: auto;
  bottom: -2px;
  left: 0;
  right: 0;
}

.section1 .content {
  width: 65%;
  margin: 0 auto;
  padding-bottom: 35px;
}

.section1 .content .itemlist {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  text-align: center;
  flex-wrap: wrap;
}

.section1 .content .itemlist .item {
  width: 25%;
  padding: 0 10px;
  margin: 10px 0;
}

.section1 .content .itemlist .item div:nth-child(2) {
  padding: 15px 0;
  color: #1F1F1F;
  font-size: 110%;
  font-weight: bold;
  height: 40px;
}

.section1 .content .itemlist .item div:nth-child(3) {
  font-size: 95%;
  color: #868686;
  padding: 0 20px;
}

.section1 .content .itemlist .item .img {
  width: 70px;
  height: 70px;
  margin: 0 auto;
  border-radius: 100px;
  display: flex;
}

.section1 .content .itemlist .item .img img {
  margin: auto;
  width: 100%;
}

/*  */

.section2 {
  background: #F0F0F0;
}

.section2 .content {
  width: 50%;
  margin: 0 auto;
}

.section2 .content img {
  width: 70%;
  margin-left: 15%;
}

.section3 {
  background: #FFFFFF;
}