.head {
  position: relative;
}
.head .header {
  width: 100%;
  height: 3.59rem;
  box-sizing: border-box;
  padding: 0 0.3rem;
  padding-top: 0.4rem;
  background: url(../img/header-bg.png) no-repeat;
  background-size: 100% 100%;
  position: relative;
  z-index: 1;
}
.head .header .header-cont {
  width: 100%;
  overflow: hidden;
  margin-bottom: 0.38rem;
}
.head .header .header-cont .logo {
  float: left;
  width: 2.55rem;
  height: 0.44rem;
}
.head .header .header-cont .logo img {
  width: 100%;
  height: 100%;
}
.head .header .header-cont .nav-btn {
  float: right;
  width: 0.56rem;
  height: 0.56rem;
}
.head .header .header-cont .nav-btn img {
  width: 100%;
  height: 100%;
}
.head .header .header-cont .search {
  display: block;
  float: right;
  width: 0.56rem;
  height: 0.56rem;
  margin-right: 0.27rem;
}
.head .header .header-cont .search img {
  width: 100%;
  height: 100%;
}
.head .head-nav-cont {
  width: 100%;
  background-color: #fff;
  position: absolute;
  left: 0;
  top: 1.95rem;
  z-index: 2;
}
.head .head-nav-cont .head-nav-item {
  display: block;
  text-decoration: none;
  width: 6.9rem;
  padding: 0.32rem 0 0.44rem 0;
  font-family: PingFang SC;
  font-weight: 500;
  font-size: 0.36rem;
  color: #333333;
  text-align: center;
  border-bottom: 0.01rem solid #e6e6e6;
  margin: 0 auto;
}
.head .block {
  position: fixed;
  left: 0;
  top: 0;
  width: 100%;
  height: 20rem;
  background-color: #000;
  opacity: 0.5;
  z-index: 0;
}