.about-product-tab .tabs-nav .tabs-nav_item-heading{
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 0;
  list-style: none;
  margin-bottom: 30px;  
}
.about-product-tab .tabs-nav .tabs-nav_item-heading li{
  padding:0 10px;
  cursor: pointer;
  font-size: 18px;
  position:relative;
}
.about-product-tab .tabs-nav .tabs-nav_item.active{
  color:#000;
}
.about-product-tab .tabs-nav .tabs-nav_item:after {
  content: "";
  position: absolute;
  height: 1px;
  width: 0;
  background: #000;
  transition: all .2s ease-in-out;
  left: 0;
  bottom: 0;
}
.about-product-tab .tabs-nav .tabs-nav_item.active:after{
  width: 100%;
}
.about-product-tab .featured-collection__content .tab-content{
  display:none;
}
.about-product-tab .featured-collection__content .tab-content.active{
  display:block;
}