.product_main {
  padding-top: 50px;
}

.product_main .title {
  font-size: 40px;
  line-height: 50px;
  text-align: center;
  padding: 25px 0;
  color: #333;
}
.product_menu {
  padding: 20px 0;
  text-align: center;
  overflow: hidden;
}
.product_menu li {
  display: inline-block;
  font-weight: bold;
  margin: 0 10px;
}
.product_menu a.active {
  color: #2d6a87;
}
.product_name {
  font-size: 22px;
  line-height: 30px;
  font-weight: bold;
  display: block;
  color: #2d6a87;
}
.product_decs {
  display: block;
  padding: 12px 0 24px;
  line-height: 22px;
  color: #666;
  font-size: 14px;
}
.product_list {
  padding-top: 50px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}
.product_list_item {
  width: 275px;
  height: 220px;
  margin: 20px 22px 20px 0;
  position: relative;
}
.product_list_item img {
  width: 275px;
  height: 155px;
  border: 1px solid #eee;
  display: block;
}
.product_list_item .default-img {
  border: 1px solid #eee;
}
.product_list_item .title {
  padding: 12px 0 5px;
  font-size: 14px;
  font-weight: bold;
  line-height: 20px;
  height: 20px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: #333;
}
.product_list_item .product_class {
  text-align: center;
  font-size: 14px;
  line-height: 20px;
  height: 20px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: #999;
}

.product-detail-info {
  display: flex;
  margin-top: 50px;
}
.product-detail-info .img {
  margin-right: 30px;
}
.product-detail-info .info {
  flex: auto;
}
.product-detail-info .info .name {
  font-size: 16px;
  font-weight: bold;
  line-height: 22px;
  padding: 12px 0;
}
.product-detail-info .info > div {
  padding: 6px 0;
  font-size: 14px;
}
.detail {
  margin-top: 30px;
}
.detail-title {
  display: block;
  border-bottom: 1px solid #eee;
}
.detail-title h2 {
  display: inline-block;
  padding: 0 20px;
  font-size: 14px;
  background: #2d6a87;
  color: #fff;
  line-height: 30px;
  height: 30px;
}
.detail-content {
  margin: 24px 0;
  line-height: 2em;
  font-size: 16px;
}