.flex-row{
  display: flex;
  flex-direction: row;
}
.justify-center{
  justify-content: center;
}
.justify-between{
  justify-content: space-between;
}
.align-center{
  align-items: center;
}
.flex-col{
  display: flex;
  flex-direction: column;
}
header{
  position: fixed;
  left: 0;
  top: 0;
  width: 100%;
  height: 1.2rem;
  padding: 0 .3rem;
  box-shadow: 0 5px 5px #ddd;
  box-sizing: border-box;
  z-index: 999;
  background: #fff;
}
header .logo{
  text-indent: -99999em;
  width: 3.3rem;
  height: 1rem;
  background: url('../image/logo.png') 21% 0%;
  background-size: cover;
}
header img{
  width: 0.39rem;
  height: 0.39rem;
}
.nav{
  width: 6rem;
  background-color: #333;
  color: #fff;
  font-size: 0.4rem;
}
.nav li{
  border-bottom: .5px solid #fff;
}
.nav li a{
  height: 1rem;
  padding: 0 0.2rem;
  color: #fff;
}
.nav li.goods ul li{
  padding-left: 0.6rem;
}
.nav li.goods .title{
  border-bottom: .5px solid #fff;
}
.nav-bg{
  position: fixed;
  left: -100%;
  top:0;
  background-color: rgba(0,0,0,.2);
  width: 100%;
  height: 100%;
  z-index: 99999;
  transition: transform .5s;
  transform: translateX(0);
}
.nav-bg.open{
  transform: translateX(100%)
}
.swiper-container img{
  display: block;
  width: 100%;
}
.advantage img{
  width: 100%;
  display: block;
}
.footer{
  color: #fff;
  background: url('../image/footer-bg.png') 0 0;
  background-size: cover;
  padding: .5rem .8rem;
}
.footer a{
  color: #fff;
}
.footer-top .title{
  font-weight: bold;
  font-size: 0.26rem;
}
.footer-top li{
  margin-bottom: 0.15rem;
}
.we-chat img{
  width: 2rem;
  margin-bottom: .1rem;
}
.footer-bottom{
  margin-top: .2rem;
}
.footer-bottom img{
  display: block;
  width: 2.2rem;
}
.footer-bottom li{
  margin-top: 0.1rem;
}
.footer-bottom li div{
  flex: 1;
}
.footer-bottom li .store{
  font-weight: bold;
  font-size: .26rem;
}
.footer-bottom li span{
  width: 2.5rem;
}
.copyright{
  font-size: 0.2rem;
  height: 1rem;
  background-color: #333;
  text-align: center;
  line-height: 1rem;
}
.copyright a{
  color: #fff;
}
.link-us {
  position: fixed;
  right: .3rem;
  top:50%;
  width: .9rem;
  z-index: 99;
}
.link-us img{
  width: 120%;
  margin-bottom: .3rem;
}