body, html {
  height: 100%;
  box-sizing: border-box
}

body {
  position: relative;
  margin: 0 auto;
  /*padding-top: 140px;*/
  font-family: Microsoft YaHei, STXihei, Times New Roman, Georgia, serif;
  font-size: 14px;
  color: #fff;
  line-height: 1.6;
  background: #1b212e
}

@media screen and (min-width: 737px) {
  body {
    width: 736px;
    margin: 0 auto
  }
}

header, nav {
  display: block
}

a {
  text-decoration: none
}

.hd {
  top: 0;
  box-sizing: border-box;
  display: block;
  height: 50px;
  line-height: 50px;
  font-weight: 700;
  padding: 0 10px;
  background-image: url(/Public/images/hd2.png);
  background-size: 100% 50px;
  background-repeat: no-repeat
}

.hd:before {
  content: '';
  display: inline-block;
  vertical-align: middle;
  margin-right: 5px;
  width: 88px;
  height: 33px;
  background: url(/Public/images/hd-logo.png) no-repeat;
  background-size: 100% 100%
}

.hd, .nav {
  position: fixed;
  z-index: 1;
  left: 0;
  width: 100%
}

@media screen and (min-width: 737px) {
  .hd, .nav {
    right: 0;
    left: 0;
    width: 736px;
    margin: auto
  }
}

.nav {
  top: 50px
}

.nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  overflow: hidden;
  border-left: 1px solid #2f7f8e;
  border-right: 1px solid #2f7f8e
}

.nav li {
  position: relative;
  float: left;
  width: 25%;
  height: 44px;
  line-height: 44px;
  text-align: center;
  background-image: url(/Public/images/nav-back.png);
  border-bottom: 1px solid #2f7f8e
}

.nav li:after {
  content: "";
  position: absolute;
  right: 0;
  top: 0;
  width: 2px;
  height: 44px;
  background-image: url(/Public/images/nav-gap.png);
  background-size: 2px 44px
}

.nav a {
  display: block;
  font-size: 12px;
  color: #969eb3
}

.nav a.is-active {
  color: #fff;
  font-size: 14px;
  background-image: url(/Public/images/nav-active.png);
  background-size: 100% 100%
}

.bd {
  padding-top: 50px;
  background-image: url(/Public/images/page-back.jpg);
  background-size: 100% auto
  width: 100%;
  height: 100%;
}

.skin-list {
  list-style: none;
  margin: 0;
  padding: 2% 0;
  font-size: 0
}

.skin-list li {
  display: inline-block;
  width: 27%;
  margin: 2% 3.16%
}

.skin-list .img {
  position: relative;
  background-image: url(/Public/images/skin.png);
  background-size: 100% 100%;
  padding-top: 153%
}

.skin-list .img img {
  position: absolute;
  top: 2px;
  right: 2px;
  bottom: 2px;
  left: 2px;
  width: calc(100% - 4px);
  height: calc(100% - 4px)
}

.skin-list .price {
  height: 30px;
  font-size: 12px;
  line-height: 30px;
  color: #fff;
  text-align: center;
  background-image: url(/Public/images/price.png);
  background-size: 100% 30px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis
}

.skin-list .price .num {
  color: #fc0
}

.back_box {
  position: absolute;
  top: 8px;
  right: 10px;
  line-height: 1.6;
  text-align: center
}

.back_box img {
  width: 17px;
  text-align: center
}

.back {
  display: block;
  font-size: 9px;
  color: #fff;
  margin-top: -4px
}